(53*10^1-71)/9 = 3 * 17
(53*10^2-71)/9 = 7 * 83
(53*10^3-71)/9 = 5881
(53*10^4-71)/9 = 3 * 19 * 1033
(53*10^5-71)/9 = 588881
(53*10^6-71)/9 = 5888881
(53*10^7-71)/9 = 3^2 * 73 * 89633
(53*10^8-71)/9 = 7 * 89 * 359 * 2633
(53*10^9-71)/9 = 23 * 256038647
(53*10^10-71)/9 = 3 * 61 * 331 * 972197
(53*10^11-71)/9 = 97 * 11447 * 530359
(53*10^12-71)/9 = 5701 * 1032957181<10>
(53*10^13-71)/9 = 3 * 1013 * 19377719279<11>
(53*10^14-71)/9 = 7^2 * 47 * 751 * 340486177
(53*10^15-71)/9 = 73 * 617 * 130745074241<12>
(53*10^16-71)/9 = 3^2 * 6543209876543209<16>
(53*10^17-71)/9 = 17^2 * 163 * 1851503 * 6751861
(53*10^18-71)/9 = 173 * 1386043 * 24558992879<11>
(53*10^19-71)/9 = 3 * 2203 * 12781 * 65867 * 10584367
(53*10^20-71)/9 = 7 * 6806327707<10> * 12360113669<11>
(53*10^21-71)/9 = 5888888888888888888881<22>
(53*10^22-71)/9 = 3 * 19^2 * 103 * 527919469371208069<18>
(53*10^23-71)/9 = 73 * 1607 * 19009 * 264079903482319<15>
(53*10^24-71)/9 = 7121 * 12123434231<11> * 68212931431<11>
(53*10^25-71)/9 = 3^4 * 299477 * 65092267 * 37295417239<11>
(53*10^26-71)/9 = 7 * 29 * 503 * 5767257429696587851109<22>
(53*10^27-71)/9 = 1229 * 14737 * 44563 * 7296220891954919<16>
(53*10^28-71)/9 = 3 * 52905920969387<14> * 371028975017521<15>
(53*10^29-71)/9 = 1104449 * 199159763623<12> * 2677232520103<13>
(53*10^30-71)/9 = 216411202177<12> * 27211571442001605553<20>
(53*10^31-71)/9 = 3 * 23 * 73 * 120427 * 248887 * 390063513887852537<18>
(53*10^32-71)/9 = 7 * 2719 * 773392758107<12> * 40006081140077851<17>
(53*10^33-71)/9 = 17 * 727079 * 476434099675784797306101367<27>
(53*10^34-71)/9 = 3^2 * 151 * 8923 * 10309561429<11> * 471045457166534777<18>
(53*10^35-71)/9 = 249779 * 2666281 * 884242774508149421827219<24>
(53*10^36-71)/9 = 10141 * 40129 * 100577513 * 143877653899682891933<21>
(53*10^37-71)/9 = 3 * 661981800841<12> * 29652823694989204993466147<26>
(53*10^38-71)/9 = 7 * 257 * 487 * 28168661 * 52981991617<11> * 450379643446301<15>
(53*10^39-71)/9 = 73 * 22531 * 29031681353<11> * 123326908229227740619979<24>
(53*10^40-71)/9 = 3 * 19 * 6364698105533<13> * 162323237399322949583843501<27>
(53*10^41-71)/9 = 383 * 29788255769355667<17> * 51616614023938225547221<23>
(53*10^42-71)/9 = 389 * 28863400884919<14> * 524488846910387211753173291<27>
(53*10^43-71)/9 = 3^2 * 83 * 78833853934255540681243492488472408151123<41>
(53*10^44-71)/9 = 7 * 11527 * 5248098173<10> * 18064170661673<14> * 76983747590692301<17>
(53*10^45-71)/9 = 8316036677323<13> * 23890111037137<14> * 29641405714917392131<20>
(53*10^46-71)/9 = 3 * 1057019 * 1439273765063<13> * 12902857543795728614844555191<29>
(53*10^47-71)/9 = 73 * 4373 * 630901 * 2475779 * 62278991 * 18963406916939064856501<23>
(53*10^48-71)/9 = 8123 * 19403329703<11> * 37362905684305402197576029039534149<35>
(53*10^49-71)/9 = 3 * 17 * 19901131630841<14> * 65653305833119<14> * 883748750693136097789<21>
(53*10^50-71)/9 = 7 * 1020431 * 83576701427<11> * 986430404304479046285922004045459<33>
(53*10^51-71)/9 = 1277 * 5219363 * 270069505663<12> * 105104482081139<15> * 31126348409390483<17>
(53*10^52-71)/9 = 3^3 * 89 * 31586237 * 775857030136164707942794544452471768839671<42>
(53*10^53-71)/9 = 23 * 109 * 523 * 1103 * 90832571 * 4482912043331268641870927013961628917<37>
(53*10^54-71)/9 = 29 * 59 * 2447 * 135999900809<12> * 10342148982373708347801189384190257577<38>
(53*10^55-71)/9 = 3 * 73 * 324049601 * 829808261428236393837035673125349789656718499<45>
(53*10^56-71)/9 = 7^2 * 103 * 2339 * 3607 * 196331 * 94832058049<11> * 742813241475451784330375535329<30>
(53*10^57-71)/9 = 9433 * 13772342817761197393<20> * 45328954386675800692352806994309449<35>
(53*10^58-71)/9 = 3 * 19 * 5693 * 928699 * 195408001355075689093084587602280319205325220919<48>
(53*10^59-71)/9 = 1439 * 3041 * 6079 * 22137266975879997584492865758562678360431746851761<50>
(53*10^60-71)/9 = 47 * 163451145079199928449<21> * 766562438051565733856576133742869405727<39>
(53*10^61-71)/9 = 3^2 * 173 * 227 * 335576792461<12> * 496508824638364333888450621457281750844384939<45>
(53*10^62-71)/9 = 7 * 14831 * 6036631328398351551723133<25> * 939658900966640069286878670397021<33>
(53*10^63-71)/9 = 73 * 171731111 * 1859895683663<13> * 160979708619372611<18> * 1568923604310336361825739<25>
(53*10^64-71)/9 = 3 * 431059762717327820590592963<27> * 45538069955515600072496823745066709929<38>
(53*10^65-71)/9 = 17 * 5279 * 10079 * 10710374819<11> * 60786993230888927604330673214722109188883285867<47>
(53*10^66-71)/9 = 547809605884906381<18> * 10749882487687030023021378185909490274022078632501<50>
(53*10^67-71)/9 = 3 * 131 * 293 * 466331 * 1096677422571488573157642767070124807067895827091213178799<58>
(53*10^68-71)/9 = 7 * 84126984126984126984126984126984126984126984126984126984126984126983<68>
(53*10^69-71)/9 = 23131 * 254588599234312778906614019665768401231632393276939556823694993251<66>
(53*10^70-71)/9 = 3^2 * 61 * 877 * 218744934291839<15> * 1497871847355353<16> * 373292066202795930160185719879978791<36>
(53*10^71-71)/9 = 73 * 113 * 6364765061<10> * 194707126518016727<18> * 57606014795866199553396322501488149293027<41>
(53*10^72-71)/9 = 19001638949978093411483292353<29> * 309914787055549124861366649484252317708420977<45>
(53*10^73-71)/9 = 3 * 467 * 971 * 130469 * 18942967 * 20460813561661003<17> * 856047297349113315460909978111401345019<39>
(53*10^74-71)/9 = 7 * 991 * 84891003155382570115163455224000128137363253407653004020309772075665113<71>
(53*10^75-71)/9 = 23 * 24799 * 12320448234531581377<20> * 1935414601243321605500959<25> * 432982988896796484956780471<27>
(53*10^76-71)/9 = 3 * 19 * 191297 * 5400703626086421590684320201359426394732475687331501231243241669024889<70>
(53*10^77-71)/9 = 1811 * 11217617 * 640033828396636394021746364327<30> * 45290944032109792251013954122507637069<38>
(53*10^78-71)/9 = 1723 * 249433 * 1810739385797299987<19> * 7567252481558441531474173718208851119511917081763257<52>
(53*10^79-71)/9 = 3^3 * 73 * 18913 * 19023881 * 83039971735286605303083574612839591473231739353808478739716533587<65>
(53*10^80-71)/9 = 7 * 263 * 1377425118623<13> * 2140234132645573623178530253<28> * 108505133899209751853390153523354379739<39>
(53*10^81-71)/9 = 17 * 313 * 127107968483092153063368594434293<33> * 8706975523887808671037951737209736665513544677<46> (Makoto Kamada / GGNFS-0.70.1 / 0.14 hours)
(53*10^82-71)/9 = 3 * 29 * 6211 * 41597 * 226643 * 15497719 * 745899774432181616569046041284707022402873013761676948313917<60>
(53*10^83-71)/9 = 95111 * 114571 * 27803521223963<14> * 362177277718577<15> * 11515990247800079<17> * 466021140831431727043581445169<30>
(53*10^84-71)/9 = 83 * 1471 * 48232813420006788996002136804639814640387973830513533854429728886085925392028117<80>
(53*10^85-71)/9 = 3 * 258858156034976966128582043589426419<36> * 75831605734598797514321239433181893407284362046233<50> (Makoto Kamada / GGNFS-0.70.3 / 0.16 hours)
(53*10^86-71)/9 = 7 * 216660013 * 9273643199<10> * 41870309655332305070117723204095084730629672490821257008703279042109<68>
(53*10^87-71)/9 = 73 * 12611 * 362504857789<12> * 17646035296551866236141897788241545229657766805015381372793198528203743<71>
(53*10^88-71)/9 = 3^2 * 307 * 10867 * 24509 * 4790117 * 22888234738212157<17> * 61431256064071256744393<23> * 11881448800631545245681966651037<32>
(53*10^89-71)/9 = 2477 * 2549 * 173617 * 3144457 * 24319157 * 15751326793<11> * 445999068794380552343439707090512553984992327365615613<54>
(53*10^90-71)/9 = 103 * 15530717964718934354255993<26> * 3681328748792105755986721998852761638866417150499267372708235039<64>
(53*10^91-71)/9 = 3 * 191 * 14433366476376882121<20> * 7120509977091590839924585451198628198749604746526788747649789653995357<70>
(53*10^92-71)/9 = 7 * 67537 * 6659333 * 29334098039133288295361<23> * 6376613339626367516413377119408574820099517297915040673643<58>
(53*10^93-71)/9 = 20149 * 21881 * 340467921179<12> * 174742186484123448271<21> * 224511572927862778526862044082485723569405656200033761<54>
(53*10^94-71)/9 = 3 * 19 * 17883277 * 142455251 * 1242204541<10> * 90511908665806157449139637089<29> * 3606900009848750786607741807322282673371<40>
(53*10^95-71)/9 = 73 * 52706587557947686850779175264478158779867<41> * 153054323082490719429614998253590499790578055440076491<54> (Makoto Kamada / GGNFS-0.70.7 / 0.44 hours)
(53*10^96-71)/9 = 89 * 57405809 * 1152623611425666172347046019212682518266112592571823330003416551017616613178220869811881<88>
(53*10^97-71)/9 = 3^2 * 17 * 23 * 1039 * 62889962241303172759934053<26> * 21569403285854316220119761407429<32> * 11873508875196513574288164122867593<35>
(53*10^98-71)/9 = 7^2 * 163 * 787 * 93686053192360217005888840154464615051696759599165812311729700676065074756786144843835159849<92>
(53*10^99-71)/9 = 1667 * 2239103 * 4435949902561517<16> * 355661663721729300119539646258820180495556944741674143728501212491786046393<75>
(53*10^100-71)/9 = 3 * 324491 * 3787247 * 619416855855512342314957<24> * 22002089602448522330195231<26> * 1172030385078651080530939940727621590053<40>
(53*10^101-71)/9 = 1093 * 899589341557183037<18> * 4094063572893842408371090892240081082571<40> * 146289890507830428192767618596204419086371<42> (Makoto Kamada / Msieve 1.41 for P40 x P42 / Apr 16, 2009)
(53*10^102-71)/9 = 179 * 4094934691079161<16> * 129498844361738502967<21> * 62039381095487231560436730366456924422756702873859877437408068597<65>
(53*10^103-71)/9 = 3 * 73 * 617 * 1613 * 8081 * 642079 * 1901177 * 316102187 * 12594200321983278331<20> * 157570442389731402339029<24> * 43663720436575394648925187381<29>
(53*10^104-71)/9 = 7 * 173 * 6221 * 78168002771689891486441118351680469734831569118382475713090923737688889844603337871059637628772751<98>
(53*10^105-71)/9 = 10857465529<11> * 35522304553<11> * 15268759957603035625296940698463366000562188721225646929396136230574543101931783341713<86>
(53*10^106-71)/9 = 3^4 * 47 * 115589 * 11101133 * 2835711100471259861<19> * 4251132953866624156072208625201612298587591539301152486681441123670362419<73>
(53*10^107-71)/9 = 97 * 269 * 461 * 1384979565662153197387040503504412975669<40> * 35348016964029802824250185131245245092377627875980924329954213<62> (Ignacio Santos / GNFS, Msieve for P40 x P62 / 0.76 hours / Apr 17, 2009)
(53*10^108-71)/9 = 421 * 29297501 * 430615281038629<15> * 319181918660889098930037073298941<33> * 3473705275298972895412113439373104122491255140892849<52> (Makoto Kamada / GMP-ECM 6.2.1 B1=1e6, sigma=534822391 for P33 / Apr 10, 2009)
(53*10^109-71)/9 = 3 * 149 * 151 * 306151033404305107<18> * 80828735637788743799<20> * 913816114880227934763160998136931<33> * 38582339849728197044686962075943831<35> (Makoto Kamada / Msieve 1.41 for P33 x P35 / Apr 16, 2009)
(53*10^110-71)/9 = 7 * 29 * 2617 * 593491 * 658012843 * 2838475120437573349667574349717310451478963981064381036128795055601206087548972054997692987<91>
(53*10^111-71)/9 = 73 * 73751 * 106363 * 14493900658606329765271121197487209608426062754421<50> * 709523408350170592136127179652066112526467686866489<51> (Ignacio Santos / GNFS, Msieve for P50 x P51 / 0.96 hours / Apr 17, 2009)
(53*10^112-71)/9 = 3 * 19 * 59 * 670785656039321<15> * 26104941582692408387080867553243408576812896413999854445492803836930051639516616911852068440147<95>
(53*10^113-71)/9 = 17 * 3073637843<10> * 26030474118504845162784711103<29> * 21345774804552219173791307932777<32> * 20283259285534416690786936552147311459023421<44> (Makoto Kamada / Msieve 1.41 for P32 x P44 / Apr 16, 2009)
(53*10^114-71)/9 = 347 * 1098821 * 12422477353909752603224071<26> * 9200036238141958862016780487<28> * 135138527632857965281947845888266035181084871056851319<54>
(53*10^115-71)/9 = 3^2 * 223 * 5273 * 258714152872988458408233821774037897987784234433911<51> * 21508396256747219765998592929869798919896339768469661174761<59> (Ignacio Santos / GNFS, Msieve for P51 x P59 / 1.34 hours / Apr 17, 2009)
(53*10^116-71)/9 = 7 * 181 * 41051 * 197395949587579<15> * 411598764225558521<18> * 139354406204265262380917778504260890327793818179835316727054908460471213759227<78>
(53*10^117-71)/9 = 23291 * 8244941 * 2020992133164073<16> * 15173754371698899854501201542634460820931476529584690374746231860621347841247740198848786487<92>
(53*10^118-71)/9 = 3 * 38449 * 149749 * 1275805291<10> * 143413164431<12> * 18633297070769158516079458790673540997390269049164903204969912716208946135788203888035987<89>
(53*10^119-71)/9 = 23 * 73 * 3137 * 247302525192062034320407341931514849<36> * 452105295957014023819909058843366067525219824276276508453661905503232282583903<78> (Ignacio Santos / GGNFS, Msieve snfs / 1.79 hours / Apr 17, 2009)
(53*10^120-71)/9 = 331 * 43613 * 3706627 * 26786575570913598534091002158361449653541557924127<50> * 4108594908349800945919523446359933990845020074836239443163<58> (Ignacio Santos / GGNFS, Msieve snfs / 1.36 hours / Apr 17, 2009)
(53*10^121-71)/9 = 3 * 194659 * 384621067 * 207102242897777867<18> * 1133539780530774666049337268862213<34> * 1116819481169900334059112170711297777323250963240946700829<58> (Max Dettweiler / YAFU v1.10, Msieve 1.38 for P34 x P58 / Apr 17, 2009)
(53*10^122-71)/9 = 7 * 1179004951<10> * 7480215383<10> * 177347056604174454511<21> * 630717286820354075676054389814809387<36> * 85279936633148638422763035773378265185304157643<47> (Makoto Kamada / Msieve 1.41 for P36 x P47 / Apr 16, 2009)
(53*10^123-71)/9 = 90943231 * 77869883783146913142335509<26> * 202264546609434854254852740781297727<36> * 4111248127642512233539893307565579092523923938001118957<55> (Max Dettweiler / YAFU v1.10, Msieve 1.38 for P36 x P55 / Apr 17, 2009)
(53*10^124-71)/9 = 3^2 * 103 * 10391 * 313517 * 1925993 * 645449533165367934958837365343863903897071<42> * 15686216002025477513604797878670354464346679288472277430682098283<65> (Ignacio Santos / GGNFS, Msieve snfs / 2.33 hours / Apr 17, 2009)
(53*10^125-71)/9 = 83 * 683 * 10388062743898973149797824778861664324452519693218947042440136338423484077843830176734267474975548852315067983010617384129<122>
(53*10^126-71)/9 = 565317637 * 264989449909797421<18> * 5758013663635117081<19> * 5684611944651483322232939<25> * 1200988163561190672640607017828603374763803692154195687467<58>
(53*10^127-71)/9 = 3 * 73 * 25493217427762241207<20> * 277735248679448990653<21> * 1260584242686275877442020368630191<34> * 30127404576352572895081225631427014656063055033555959<53> (Makoto Kamada / GMP-ECM 6.2.1 B1=1e6, sigma=2686745453 for P34 / Apr 11, 2009)
(53*10^128-71)/9 = 7 * 167 * 24969206764244227895770332415233048905828749459976209<53> * 20175026012093362314000182915103646299439827080940433333601709650431305361<74> (Ignacio Santos / GGNFS, Msieve snfs / 3.22 hours / Apr 17, 2009)
(53*10^129-71)/9 = 17 * 21589 * 25322624759976549455734598285790216107772481213399224703<56> * 633640886576731402778133093433220256786188375338961718270777059934179<69> (Ignacio Santos / GGNFS, Msieve snfs / 3.29 hours / Apr 17, 2009)
(53*10^130-71)/9 = 3 * 19 * 61 * 577 * 2927 * 7382416109<10> * 1369886219328469<16> * 37956724012464402598129885947865441919<38> * 26125126047863880080771368057462882723263924827439187557293<59> (Sinkiti Sibata / Msieve 1.41 for P38 x P59 / 4.66 hours / Apr 17, 2009)
(53*10^131-71)/9 = 53789159 * 124430651 * 176402014232377<15> * 2912459122147804891<19> * 183524087459434712877168183306541<33> * 933157135244103113116304207054813375684064955578707<51> (Makoto Kamada / Msieve 1.41 for P33 x P51 / Apr 16, 2009)
(53*10^132-71)/9 = 1281391928383407443715643<25> * 70717068655533892290512518379<29> * 64987095316455214114952282532491980060259719423095323680698090107372690517136073<80>
(53*10^133-71)/9 = 3^3 * 1736132214682934259760138027279169156218659023617<49> * 1256281025374591242622665628469340154953343169071606736108858272346763080946503313059<85> (Serge Batalov / Msieve-1.41 snfs / 2.32 hours on AMD Phenom(tm) II X4 940; openSUSE/64 / Apr 18, 2009)
(53*10^134-71)/9 = 7 * 457 * 1361 * 1362262079<10> * 22366955165587<14> * 35115408031471<14> * 126414165203461110064362711192189231991309341210068958968228239455269842368262871632869692213<93>
(53*10^135-71)/9 = 73 * 17971 * 208950478073359106691735508553258069951<39> * 238220374772566897555570835368515940408729<42> * 90181194435531348598364513854322550480408866621333<50> (Ignacio Santos / GGNFS, Msieve snfs / 3.61 hours / Apr 17, 2009)
(53*10^136-71)/9 = 3 * 2377 * 4890889 * 4871047287539<13> * 12947051357240201<17> * 26773299780154646615513200737025890199377072197990198239460992442527588961461775229495821231409281<98>
(53*10^137-71)/9 = 2529341 * 57317234083<11> * 10120347009555997<17> * 401370405761969480403280851842171287309279815934113212166050550483348660671964018196627310102106061806691<105>
(53*10^138-71)/9 = 29 * 647951 * 358891536869<12> * 207918343886153<15> * 6192700806701161<16> * 343285591799040843138102857725593336454477<42> * 1975611290293895905492495874305707347552169153691<49> (Serge Batalov / Msieve v. 1.41 for P42 x P49 / 0.88 hours / Apr 18, 2009)
(53*10^139-71)/9 = 3 * 751 * 2415546311873706757<19> * 19628836388346054508128484997147281<35> * 1950538446329560608415371227959497329<37> * 282623148366498362008930795950925297690193155889<48> (Serge Batalov / GMP-ECM 6.2.2 B1=3000000, sigma=2883563787 for P37, msieve qs for P35 x P48 / 0.21 hours / Apr 17, 2009)
(53*10^140-71)/9 = 7^3 * 89 * 193 * 2111 * 133606127 * 354386619852558168198691820530336269705230519945387067338071404390448204591693233562244445080668640527252266400272265830943<123>
(53*10^141-71)/9 = 23 * 5099 * 71573920589<11> * 1321406721497617037<19> * 530920131741653693412291687168997399151011423667852391848746436217311464869344283796886360418826622773597021<108>
(53*10^142-71)/9 = 3^2 * 1709 * 278909 * 76152539500821414403933627<26> * 71133922634174006030717975784795514715709640159273987<53> * 2534107945612965006523312677086987427729240908255143361<55> (Ignacio Santos / GGNFS, Msieve snfs / 9.02 hours / Apr 17, 2009)
(53*10^143-71)/9 = 73 * 7177 * 418279 * 38724030013<11> * 1584189593401<13> * 43804001850021173196114182337801108544800058741301859862693095118456303640113580433096013870864511349020345243<110>
(53*10^144-71)/9 = 401 * 1483 * 1659757226539637575580313637<28> * 5966275015328736844715661106934015056266694175298361486440382337846547463462651726656547793591422844190610439111<112>
(53*10^145-71)/9 = 3 * 17 * 929 * 485499853 * 850230413 * 1274328443<10> * 4221790879<10> * 3316688302115642889056012400773516430032419<43> * 168748133784761883638959898979058638917739521572854314854336157<63> (Robert Backstrom / GGNFS-0.77.1-20060513-pentium-m, Msieve 1.39 gnfs for P43 x P63 / 5.68 hours, 0.63 hours / Apr 18, 2009)
(53*10^146-71)/9 = 7 * 369361 * 15600681731<11> * 748067904629<12> * 331395687727519512413<21> * 58891529127516333749395895703020966043451594445976907153820401933956244542556350797391578157645469<98>
(53*10^147-71)/9 = 173 * 911 * 1864678338609841<16> * 8841650303160994912744847210119857502267<40> * 2266374213407869403317452567641879525824318358979772631723729317593675170965387268563441<88> (Ignacio Santos / GGNFS, Msieve snfs / 13.69 hours / Apr 18, 2009)
(53*10^148-71)/9 = 3 * 19 * 2381 * 5711 * 13834209197<11> * 82385359894943408004943162699533169281913<41> * 66662648941747010745791795419173523195324651729972252459647715337503778584049915638822583<89> (Jo Yeong Uk / GGNFS/Msieve v1.39 snfs / 9.99 hours on Core 2 Quad Q6700 / Apr 19, 2009)
(53*10^149-71)/9 = 65563 * 1815347719<10> * 321073852383149036798633<24> * 106800209355250487145003373704765155010615558207705547567<57> * 144290479211011391034524051927928805222760474712705729043<57> (Robert Backstrom / GGNFS-0.77.1-20060513-pentium-m, Msieve 1.39 snfs / 15.47 hours, 0.42 hours / Apr 19, 2009)
(53*10^150-71)/9 = 248747801 * 11462866529<11> * 1006667291845049530667097296308918344203566521580425950778739<61> * 2051610515873675499019042734361944316125748570732769002787444070163735651<73> (Ignacio Santos / GGNFS, Msieve snfs / 13.07 hours / Apr 19, 2009)
(53*10^151-71)/9 = 3^2 * 73 * 601 * 3067 * 8360509 * 50792883547972719649<20> * 542501417551026748883<21> * 42936148687473484273728024786408390015437208617<47> * 4916094149477628730365878389162042910302106837749<49> (Sinkiti Sibata / Msieve 1.41 for P47 x P49 / 4.54 hours / Apr 18, 2009)
(53*10^152-71)/9 = 7 * 47 * 132859 * 358120980514725128858958545331653679533<39> * 37619820414914044458839692273435650922151956137997093517622555060481625863874724410536072161511382815906487<107> (Markus Tervooren / Lattice siever (64bit/asm), msieve 1.40, factMsieve.pl snfs / 11.66 hours on Q6700@2.9Ghz, Linux / Apr 19, 2009)
(53*10^153-71)/9 = 381407753 * 7056171646723<13> * 19433417519321671<17> * 112596664420471871059307212092454804829241838216575569612455737263662910805277122144746589154569959004700988029558469<117>
(53*10^154-71)/9 = 3 * 229 * 784913 * 58432003235623530165281017016867956379005573<44> * 1909904305005828208979377889723705736501215261699<49> * 978571848436525753147014195992938337808040799827522913<54> (Robert Backstrom / GGNFS-0.77.1-20060513-pentium-m snfs / 24.35 hours / Apr 21, 2009)
(53*10^155-71)/9 = 2803 * 253507 * 828743827029871116938956541522625692604886267130584263683459966773949322020069414366418630628830790059336445874045059148071620327370358407322921561<147>
(53*10^156-71)/9 = 21893 * 414036871 * 5097582013<10> * 458737405579699161469808051148151<33> * 277818197649398752305269669956120329087419350051266481378494174971171347683342879820983467197939102529<102> (Robert Backstrom / GMP-ECM 6.2.1 B1=2072000, sigma=272239408 for P33 / Apr 19, 2009)
(53*10^157-71)/9 = 3 * 6610125409<10> * 119064466187<12> * 5521637296501<13> * 84491086696477194314717306030587<32> * 53461540124184596743923706059997123664492579792419166939716147777994870977570398168015036887<92> (Makoto Kamada / GMP-ECM 6.2.1 B1=1e6, sigma=3671331176 for P32 / Apr 12, 2009)
(53*10^158-71)/9 = 7 * 103^2 * 36843969518977<14> * 590800533267749425396799989726967304158855580389298407<54> * 364295308035138105843948238320786618697318570121178416315717666433432812884446432322033<87> (Ignacio Santos / GGNFS, Msieve snfs / 36.12 hours / Apr 17, 2009)
(53*10^159-71)/9 = 73 * 5966567237<10> * 4981932222649<13> * 26273193042133<14> * 2062452635612297<16> * 6078143242188653953677512610851837554339876404942979<52> * 8239870283677649983233243756347853355656983261837612011<55> (Robert Backstrom / GGNFS-0.77.1-20060513-pentium-m gnfs for P52 x P55 / 8.87 hours / Apr 19, 2009)
(53*10^160-71)/9 = 3^3 * 51427 * 554843 * 177844836628177373012417<24> * 2436291729293249338174146577<28> * 176415907300469890403335336000402462853700817492156675694865055254956107096206611579751850489229347<99>
(53*10^161-71)/9 = 17 * 109 * 94530201856501<14> * 3361919851243846832858222414340123257026579573306840501250233237011261574638521885448448424857009453375932822321715006879426893388912260958784977<145>
(53*10^162-71)/9 = 70679701 * 44026722517<11> * 1236279080219216121922252206884753<34> * 443544821402465146063268358238856200246841<42> * 3451185210796963823875477889316547070862232437023870711320410226459441<70> (Serge Batalov / GMP-ECM 6.2.2 B1=3000000, sigma=3167953602 for P34 / Apr 19, 2009) (Robert Backstrom / GGNFS-0.77.1-20060513-pentium-m gnfs for P42 x P70 / 15.86 hours / Apr 22, 2009)
(53*10^163-71)/9 = 3 * 23 * 2389 * 96513550638754153673<20> * 377498624063625239463952264309281335010127635110927025061<57> * 9805380550742964674231939389316251929069674579746840643746394494793350010716857197<82> (Jo Yeong Uk / GGNFS/Msieve v1.39 snfs / 34.87 hours on Core 2 Quad Q6700 / Apr 20, 2009)
(53*10^164-71)/9 = 7 * 409 * 6546181 * 87139389079<11> * 228311433299<12> * 394196473114547<15> * 4006536441729777547137177824637505314096461411055752610061051347773975842295115688775884028749697891079548448957996221<118>
(53*10^165-71)/9 = 367 * 1942027 * 1371144007102407524796878911<28> * 7456075032830949289097809630839141133<37> * 808199714463033799839895000646180717663570250954579698107795831316200571506223546388577376143<93> (Jo Yeong Uk / GGNFS/Msieve v1.39 snfs / 24.84 hours on Core 2 Quad Q6700 / Apr 24, 2009)
(53*10^166-71)/9 = 3 * 19 * 29 * 83 * 240857467 * 11060457607<11> * 20894699998037<14> * 5424508418994216438894842882597473125698917<43> * 1421519024674072529801317548921990745200160059101495179565493543560830040916204609073619<88> (Jo Yeong Uk / GGNFS/Msieve v1.39 snfs / 38.60 hours on Core 2 Quad Q6700 / May 14, 2009)
(53*10^167-71)/9 = 73 * 769 * 66501587107<11> * 353614322081<12> * 15289508170453564157615559715265886034189<41> * 29176204089714079058424787149185032695439825811546932354672800303249154820310505588922930701582824751<101> (Robert Backstrom / GGNFS-0.77.1-20060513-pentium-m, Msieve 1.39 snfs / 61.86 hours, 1.47 hours / Apr 23, 2009)
(53*10^168-71)/9 = 593 * 17404799 * 2547335314631<13> * 169017775524223519035278966544358165435527479<45> * 1325229688509753839571072379572594850333978022743803818791211312741515576887190505144667080147934159967<103> (Robert Backstrom / GGNFS-0.77.1-20060513-pentium-m, Msieve 1.39 snfs / 77.13 hours, 1.64 hours / May 4, 2009)
(53*10^169-71)/9 = 3^2 * 55619 * 268408781245025917238865818507107<33> * 23558974883254664303215516645325268137706557468101857830919331<62> * 18604352743858630351683027420410354047658125089089380509126300180803083<71> (Serge Batalov / GMP-ECM 6.2.2 B1=3000000, sigma=504785334 for P33 / Apr 19, 2009) (Erik Branger / GGNFS, Msieve snfs / 143.39 hours / Sep 6, 2009)
(53*10^170-71)/9 = 7 * 59 * 1427 * 568218567627765334438930578061<30> * 2263601622974746710068103777175357428919279<43> * 129968124481852563001973196053531945137907861<45> * 5977327695821253697952452498480093874447527049209<49> (Makoto Kamada / GMP-ECM 6.2.1 B1=1e6, sigma=113594766 for P30 / Apr 13, 2009) (Jo Yeong Uk / GMP-ECM v6.2.3/YAFU v1.10 B1=11000000, sigma=5649517295 for P43, Msieve 1.38 for P45 x P49 / Sep 23, 2009)
(53*10^171-71)/9 = 1129399 * 1012782147434752932667684249508918320121901242771161953907631<61> * 5148372050856343302191719932929532293542830496633217654226873938020652977210113515374231410045450654341849<106> (Ignacio Santos / GGNFS, Msieve snfs / 103.07 hours / Sep 8, 2009)
(53*10^172-71)/9 = 3 * 8742213383<10> * 9759491317<10> * 106446437711<12> * 10601072798007631161102454630817205890692937<44> * 203883730699112554340682537696863687962527754812211444395588968498956615798570871172536737058613151<99> (Sinkiti Sibata / Msieve 1.40 snfs / Sep 9, 2010)
(53*10^173-71)/9 = 342035173 * 2915131451<10> * 21812315423609<14> * 436720646691181<15> * 62001037182833246163037786829113100089231996298716352216446147904051416691669051500703176080636334803166892019423462844058897243<128>
(53*10^174-71)/9 = 227 * 571 * 406327 * 19623288819879302404741<23> * 1684402771698298205544366185060396248937<40> * 3382812834919757230081517606275227380841031584932169238707555346188691013336307085773625503489510356227<103> (Wataru Sakai / GMP-ECM 6.3 B1=11000000, sigma=1992018618 for P40 / Sep 21, 2011)
(53*10^175-71)/9 = 3 * 73 * 1024183 * 2158548290899707807210634246105330347041<40> * 121632578456805687673146582029186126326283394657268436697370779282164748561294068326344587870149269097387136954490861643986922133<129> (Serge Batalov / GMP-ECM 6.2.2 B1=3000000, sigma=2926320089 for P40 / Apr 19, 2009)
(53*10^176-71)/9 = 7 * 607 * 5851 * 58997 * 60148447 * 973961250086329389674786333289700652199502176885636868584942490441<66> * 6853627644462355121635744397686678572198073275569413185596633478506316442138576298745347401<91> (Robert Backstrom / Msieve 1.44 snfs / Jan 12, 2012)
(53*10^177-71)/9 = 17 * 84278649583<11> * 83846966942573550215335355421366466453<38> * 49020700550042523594461039571340331345624909658090604188085869487138236288231502468124541777211426910099206442117974642551726707<128> (Robert Backstrom / Msieve 1.44 snfs / Feb 19, 2012)
(53*10^178-71)/9 = 3^2 * 21867644976972022514831833<26> * 299218772000076506697481087436767559110832688703189142759325693482885876756254484797364300299536544476034549717653948177700863733750518502210424230441873<153>
(53*10^179-71)/9 = 163 * 18628273 * 866713253195654936779138316416417782115643<42> * 223767868102340497715249431391419630304160168724277402326868315388378916065982012043885571596953803105599876369448427080060494833<129> (matsui / Msieve 1.47 snfs / Aug 30, 2010)
(53*10^180-71)/9 = 1489 * 2112271972319<13> * 1274958669323474059<19> * 8000247039133409412409466789170274837723701287795721329334003206858697<70> * 183564764670237893771779277835991000964245420681999676385437854384908696468917<78> (Cyp / yafu v1.34.3 / Jan 19, 2014)
(53*10^181-71)/9 = 3 * 2879 * 24081340990091404175861057053153272486112035432620191<53> * 283132532303703333726830050085836989037702953632307132314359052811450789821802506909621984361284526068569973287653670838199643<126> (Wataru Sakai / Msieve / 303.42 hours / Jul 12, 2009)
(53*10^182-71)/9 = 7^2 * 91099 * 80463451769347<14> * 9797034164326174205366944565419152172096415169062759601524386591960307503<73> * 167351800281093420611703526986821738858454946149413530678912739192160215536163343456343391<90> (Jo Yeong Uk / GGNFS/Msieve v1.39 snfs / May 10, 2014)
(53*10^183-71)/9 = 73 * 113 * 5779 * 80273 * 543483353732909<15> * 1633503274622224469<19> * 9329922208436263697241721<25> * 1099460710064905094872964317328985126416851<43> * 168984112509748557056357145099368984533273143568828753891708684224898777<72> (Markus Tervooren / Msieve/ ggnfs/factMsieve.pl for P43 x P72 / 0.54 hours on Q6700, Linux / Apr 20, 2009)
(53*10^184-71)/9 = 3 * 19 * 89 * 151 * 706329023 * 16666608060731198666978428169593368146276636075748852251<56> * 6530362300418088654941476095527218616589421657634046206371829150076875932254271111338049103930296678789177615836539<115> (Jo Yeong Uk / GGNFS/Msieve v1.39 snfs / Oct 3, 2014)
(53*10^185-71)/9 = 23 * 233 * 215325522097885785506678338135721202120862759<45> * 510333519255213660531524689794452061284434462061881762456420580789577174717938354675826912683331869019878654674813170859867374521644491401<138> (Robert Backstrom / GGNFS-0.77.1-20060513-pentium-m, Msieve 1.39 snfs / 125.56 hours, 3.11 hours / Aug 4, 2009)
(53*10^186-71)/9 = 191 * 5259691725677<13> * 3099447308944650591613477138713202821707<40> * 1891278321918695664777134333464307862000581875050907573341326500308707413363978563125866066832649478491856277904323445630603178137569<133> (Rich Dickerson / GMP-ECM 6.4.4 [configured with GMP 6.0.0, --enable-asm-redc] [ECM] B1=11000000, sigma=4212705910 for P40 / Apr 9, 2014)
(53*10^187-71)/9 = 3^5 * 359 * 3343 * 10417662811<11> * 26149184533<11> * 1437483587553631<16> * 426428515745133381252762803437522370327247290179<48> * 1209257198797584787595859912703484885513004961237454306684162333879536223944707805832130156178793<97> (Jo Yeong Uk / GMP-ECM 6.4.4 B1=11000000, sigma=1955507351 for P48 x P97 / May 8, 2017)
(53*10^188-71)/9 = 7 * 560081 * 13681129296834545790203<23> * 2160819755462973900776010355839663814291075656239644022575091552786923<70> * 5080939117542491382626480418164306450610976891968283520430603676404747144718939773960934847<91> (Eric Jeancolas / cado-nfs-3.0.0 for P70 x P91 / Jul 3, 2020)
(53*10^189-71)/9 = 46036250681<11> * 10313553303167908476634005547699068139631651503643942818358838462788115555562235849226013<89> * 12402952955683888768437065024498316965505671752164409386070508532057637458786692702033318477<92> (Robert Backstrom / Msieve 1.44 snfs / Feb 15, 2012)
(53*10^190-71)/9 = 3 * 61 * 173 * 39203873 * 211360399 * 168914326803248671710673803592753171<36> * 1367636984963951639753577153207521555363953<43> * 971731430107673147043835061767876569745815441405365732504234542031134687004068231357517112959<93> (Dmitry Domanov / ECMNET / Aug 20, 2009) (Robert Backstrom / Msieve 1.44 gnfs for P43 x P93 / May 10, 2012)
(53*10^191-71)/9 = 73 * 617 * 719 * 18184294052990288616003020733756096211672538838401225750424729355346086898260394706022254947775719624480878290149083111353710179771269097424383109232323573551666182089540143254702009839<185>
(53*10^192-71)/9 = 103 * 1327 * 5861 * 23459617 * 1163563275202877<16> * 512457225422067115117031521<27> * 525514794935388469823839539467678178571927133459965254039555656752351747617228959860006542279565277370046202999911500048483367847144569<135>
(53*10^193-71)/9 = 3 * 17 * 2131 * 122614102349<12> * 157528172059<12> * 386318917324635401637343670457937<33> * 72616464843759242682094782381797010874803934727294295921255817042629723671550851219691527308314086340987245476998440916635306218917703<134> (Dmitry Domanov / ECMNET / Aug 18, 2009)
(53*10^194-71)/9 = 7 * 29 * 27253 * 443577473 * 239968105889329839800818782378821416652997643853658460434843829354816357639439040919368081319335268908506284885972015898811031890697058681619463778920060231184494072847674821539783<180>
(53*10^195-71)/9 = 1319 * 33857 * 6522546262176896794087564739115713<34> * 20217289175101472176634624589120256959714664779605055451404756357758626997987860981678743694952263411707665143615277807384449498161455207993683372278411239<155> (Serge Batalov / GMP-ECM 6.2.2 B1=3000000, sigma=3935644505 for P34 / Apr 19, 2009)
(53*10^196-71)/9 = 3^2 * 4973 * 74797 * 122655881 * 112054989341662601618892514165224888241<39> * 1279878186755975199770625717338893764280326490898655144840134732459923961450639607812280526526379705342401644682052605125245400793894469473609<142> (Dmitry Domanov / ECMNET / Aug 20, 2009)
(53*10^197-71)/9 = 131 * 1171 * 32333333 * 7097585846683<13> * 16728000787624434672706420429241148648586412843444468242320230169766101707633695373116355888951891699556104579851405367207507208657241805690108163449753967360123971648555279<173>
(53*10^198-71)/9 = 47 * 4691 * 1041730059761<13> * 502491685538339197<18> * 924006084409319617<18> * 36834310800773821621456932328515617917349953978062058447406312072795441<71> * 1499196686722373792632103248166855528326051649782921176863172492348139924297<76> (Eric Jeancolas / cado-nfs-3.0.0 for P71 x P76 / Dec 25, 2020)
(53*10^199-71)/9 = 3 * 73 * 673 * 266159 * 552983 * 3102567738795501035174358242345200861732026226988201852030153483069<67> * 874983719587211253125910072472339628672932905635777092220301297237889364531997279935023942308125442735017736604311991<117> (Eric Jeancolas / cado-nfs-3.0.0 for P67 x P117 / Apr 2, 2021)
(53*10^200-71)/9 = 7 * 4159 * 3034505345452117268700680317998766514478361928655978367451115957769572858803<76> * 6665895375622611920987398511774431994286383426667359548052717579186720130290324269246467364058297937649408474006753108579<121> (Markus Tervooren / Msieve 1.44 for P76 x P121 / Mar 13, 2010)
(53*10^201-71)/9 = 845726166293<12> * 26614080411265630091650323405683<32> * 1794430753489253909875736770178125769413393554581<49> * 145802652231741019434075034149729394131708737396949035817587232413952971748978030367217657036021764322704518179<111> (Serge Batalov / GMP-ECM 6.2.2 B1=3000000, sigma=1279820415 for P32 / Apr 19, 2009) (ebina / Msieve 1.53 snfs for P49 x P111 / Aug 29, 2022)
(53*10^202-71)/9 = 3 * 19 * 857 * 1259 * 1004317 * 71365367 * 779769064987480193874703347294131196204883<42> * 6591323637634753207302936999088267810917962745645943127107273<61> * 2599291561059480945565789772450143848218612000082631326002378848584710013998891<79> (Dmitry Domanov / ECMNET / Aug 20, 2009) (Sinkiti Sibata / Msieve 1.42 gnfs for P61 x P79 / Jul 3, 2010)
(53*10^203-71)/9 = 97 * 378031809054421<15> * 1807539716019810355646912976078789766098074820191538199770318857807859236937239167528706745991<94> * 8884754513936366982518393373265742130548385885878180501840416643263199394229816811435682378443<94> (Bob Backstrom / Msieve 1.54 snfs for P94(1807...) x P94(8884...) / Aug 21, 2021)
(53*10^204-71)/9 = 1894601 * 13897365986571033101218215063619913<35> * 223657313079454078280340595149145069743916262638623599497122392196510180718091050020838810477552037958778607888933892716339481082931410115624804909510584996502701537<165> (Makoto Kamada / GMP-ECM 6.2.1 B1=1e6, sigma=2014047816 for P35 / Apr 15, 2009)
(53*10^205-71)/9 = 3^2 * 1747 * 677639 * 24773841302921<14> * 38890602599868190564621649574538065154223681893737437<53> * 5736691942583823449594066954210646466721732505485509130873380197100488136359317213303544868719719524663202099815154059597509844049<130> (Jamoko / GMP-ECM B1=110000000, sigma=3731845005 for P53 / Oct 12, 2010)
(53*10^206-71)/9 = 7 * 123619 * 2180033 * 53307139 * 693021354109385569<18> * [8449967430884347989475626348947671968724318032565180599893076125554274067691741435726769202714309273644963828208614733922238445536684642611331426359590773335768558583119<169>]
(53*10^207-71)/9 = 23 * 73 * 83 * 1907 * 10321 * 10487 * 78946205449<11> * 60162950045791445827271168292277<32> * 90705977533693966428569268376688123<35> * 509189635111823002172002762789805207<36> * 933265015001111635350710399242583599060595601500840677301339666502101332121449<78> (Makoto Kamada / GMP-ECM 6.4.4 B1=1e6, sigma=3426589799 for P32 / Oct 15, 2013) (Serge Batalov / GMP-ECM B1=3000000, sigma=1008905983 for P36, B1=3000000, sigma=1311436215 for P35 / May 26, 2014)
(53*10^208-71)/9 = 3 * 376801 * 28263562633162128421834460097029443<35> * 1843202941351756141750676717538014590914209160756014943721741066486468107429610790972089682564712903176768962064809701173159237915055778751489514893925259971787093129289<169> (Cyp / GMP-ECM 6.4.4 B1=3000000, sigma=3180986952 for P35 / Jan 3, 2014)
(53*10^209-71)/9 = 17 * 126093122000899602623198916245997821<36> * [274721747912386950487121041289321628965335700331942136615589864345417253493894606147963494622168586799471015871999506842142921061341303762462159167967820084961209302172850933<174>] (Serge Batalov / GMP-ECM B1=3000000, sigma=1047034051 for P36 / Oct 27, 2013)
(53*10^210-71)/9 = 5659 * 556253 * 1870773890256722691072274270838685632876066816713173701420693256172859013010652219746182736202513686283251492204977089291702066284124390360503996175937960211380779238766448147911528195476538883850367103<202>
(53*10^211-71)/9 = 3 * 48649 * 1618300147<10> * 3857893687<10> * 9627212954256511421<19> * [6713179817392035199355634473378325489397705064010469300562473564409062347826621101448239735734284053757952116837209607047035855655230566406443674795610579166452530150467<169>]
(53*10^212-71)/9 = 7 * 152267 * 1077097784114007278747316997321988482596321462172637279876109207362002913964117046576471<88> * 512949246826791354571962572175997653618094651220837947665783859996315083884471996219193158115137254692940517414428948819<120> (Bob Backstrom / Msieve 1.54 snfs for P88 x P120 / Nov 14, 2019)
(53*10^213-71)/9 = 293 * 13842670239667069<17> * 5997682471234380510251527889<28> * 242081943264585582611986136338833792815863172541254024804865080880798021315412648848871814625026108369094140480278424851112842379252533193262514173845956744913446022737<168>
(53*10^214-71)/9 = 3^3 * 439 * 176179 * 49388671138327<14> * 142310292915120902745028400179286447<36> * [4012243494192290266929449619250321020974352546058802613425248682062951095194072712916122267243745399045607101332273273719572828438843626272665315747866783727<157>] (Cyp / GMP-ECM 6.4.4 B1=3000000, sigma=2356929567 for P36 / Jan 5, 2014)
(53*10^215-71)/9 = 73 * 17683 * 1271261195242222769288953453<28> * 358855628700916618834402368015510844058836572185265298472228585983780494175104390726755207755791024475366858844582472542061552166031478455773949572018264916559094700213701954233021503<183>
(53*10^216-71)/9 = 481306408883809<15> * 12235218106789247254621199770166743637490879534231574449802910801850425594201243410213400175115877313480315176562463330025713548451640443036430548768642702160374209967365983525075208131398271899770579409<203>
(53*10^217-71)/9 = 3 * 887 * 643619 * 50193643 * 5013080329487<13> * 8292613758239501<16> * 460381769122640408551<21> * 35792883986732310364143454034615208320088420856422014333663658627799923842372156708311771657107109289182868156824455814524607596783681732347783978174249<152>
(53*10^218-71)/9 = 7 * 659 * 123121 * 44805040139<11> * 16464154697132297<17> * 1405566709794605738242612498862187057149118127873762454134466880443510942773622117905130899932140748590884686751669960348553809524948824909035730156611374663427695288988677495151063759<184>
(53*10^219-71)/9 = 1193 * 3769 * 12781610629<11> * 22810067614541<14> * 53206522394828516559977<23> * 62813123319556741367627325406809042171015854037217359174108967813<65> * 1344124075582784471432007666937822529144536869906050556564825574896987668537206937153477021789701337237<103> (Erik Branger / GGNFS, NFS_Factory, Msieve snfs for P65 x P103 / Mar 6, 2021)
(53*10^220-71)/9 = 3 * 19 * 379 * 1720547576071<13> * 49879002335504992980126518417485864678512976737547<50> * 161086579172634266256206154256444716388247435027526408390069373<63> * 197185733910655590678525457841376983454252801179319453388137319548470659542425277953965847827<93> (Erik Branger / GGNFS, NFS_factory, Msieve snfs for P50 x P63 x P93 / Mar 10, 2019)
(53*10^221-71)/9 = 647 * 149827 * 5739193 * 364170337 * 3148947081107<13> * 923035141962977659573240388548930407308656524886022217608308069339369832224564838854976956274166688609380740000169792708578228160923637191984328845026181762008659179894137940189686394327<186>
(53*10^222-71)/9 = 29 * 8290999 * 113221583 * 41203279824853<14> * 42324376109173059178878639693429036505300217903<47> * 5198582969239259032604503969497466541104276432888311480033199391051985829<73> * 23861181511869446954629687601040284311087825117820324574242512385272544747<74> (Erik Branger / GGNFS, NFS_factory, Msieve snfs for P47 x P73 x P74 / Jan 31, 2022)
(53*10^223-71)/9 = 3^2 * 73 * 1021 * 2096047 * 5403726053822738826952029920393659608180289<43> * 7750824579524503512582910636978951507172546125081296097806665464003219669409725790811234151355675053266521959238986352711140096490020663121397015838026443508133467600731<169> (Bob Backstrom / GMP-ECM 6.2.3 B1=300190000, sigma=2033704875 for P43 x P169 / Apr 30, 2020)
(53*10^224-71)/9 = 7^2 * 19805968661393911<17> * [606793880927172199836014017786962263520983964963710655976291282702844370587410540074142989543854020836346679560273627072926315547915786520155493158713795532710864039199963317363156379614746787852318229684679<207>]
(53*10^225-71)/9 = 17 * 4157 * 4306633 * 5514904676021043139247<22> * 3508557030358124197606291876279755691941234941616919679088803933330914831277961405476163186652900322626441879755186019864643105869752998894303740511153435408930935284052079670953843525284167299<193>
(53*10^226-71)/9 = 3 * 103 * [190578928443006112909025530384753685724559510967277957569219705142035239122617763394462423588637180870190578928443006112909025530384753685724559510967277957569219705142035239122617763394462423588637180870190578928443006112909<225>]
(53*10^227-71)/9 = 536842127 * 1096949846651823747224086400523647595355140392864304572150107901068071151742696394034831191421922238395588669755957674478271502878701784312259996855442175254046128330180185149458080604186431309793407641589365971811837503<220>
(53*10^228-71)/9 = 59 * 89 * 42695139851805561308003597<26> * 3212989126160258441205622140401<31> * 806753529393695866592572924011151<33> * 10133576995006851845182679782625849598140988874262764668542118608907928137081502198107971005504837878880501058025814778948736372801174073<137> (Makoto Kamada / GMP-ECM 6.4.4 B1=1e6, sigma=689885817 for P31 / Oct 15, 2013) (Cyp / GMP-ECM 6.4.4 B1=3000000, sigma=2634922576 for P33 / Jan 1, 2014)
(53*10^229-71)/9 = 3 * 23 * 1063 * 405827 * 56201107811<11> * 322923814670201<15> * 879476479793727957130162628396071878177431<42> * 123948389281761066221716336812850451095725162297782187592341204336609727089445555558772545930465753549232667491451946369153584560934906727727458111325789<153> (Serge Batalov / GMP-ECM B1=3000000, sigma=3161167232 for P42 / May 19, 2014)
(53*10^230-71)/9 = 7 * 331 * 69830381 * 1243330390493<13> * 5793291368735417233<19> * 505301973127971487547045727498758464366263740105222638319156723210468727075624068141683455050982541126313725309963842683619611894458614298538551461708582426772522793776483043899457155765037<189>
(53*10^231-71)/9 = 73 * 491 * [164296763353761930889961467759085146022623354319919897578017713051052894257983117732580668160837231506539321175372845154950447476184719161032527659205113659260912560022567555419158242582621122363889431378201849423566355742791867<228>]
(53*10^232-71)/9 = 3^2 * 337 * 35839 * 9763939 * 17977019 * 9348295771<10> * 11517277548943<14> * [28666855300857586749963819559620108665619005513200258209245590755765398549798605883108276286281979361028444593353573190871292576286722942615068226869218009589086615919832899171362722288731<188>]
(53*10^233-71)/9 = 173 * 541 * 39841 * 216219407 * 268389420384873783938667315447273234845329<42> * [2721445847724950946062731588846489382015117054768100802652149851495239855770440565261108179628964620997589456040593534839290515925478335510888724008969545940010156881770849479<175>] (Serge Batalov / GMP-ECM B1=11000000, sigma=4226501823 for P42 / May 27, 2014)
(53*10^234-71)/9 = 5360097851<10> * 2368762400427949<16> * 339397717700284614754489893609631<33> * 1366564780473183140996202492044912197008134598522040714503430543582716865076656917383138488234621300673549013474667370386688016016955568294960270644344662178510101307525926025649<178> (Cyp / GMP-ECM 6.4.4 B1=3000000, sigma=63261412 for P33 / Jan 6, 2014)
(53*10^235-71)/9 = 3 * 8731 * [2248268197185846939597941774095708352952654865379639174164429003508146790703198903863203485239907184701595422016908673649024124341957350776500931122394872251704229713621535864119760580647077039242885079559000072114262928602637685217<232>]
(53*10^236-71)/9 = 7 * 3089 * 63199 * 4242421 * 275412252873500646323664980344451<33> * 368816365457564746643000376766341972507540716772645725915820650135485048164768334371088656204661532020520201899296415868823632456129392041557115464487211197463499630351405788134888464857943<189> (Cyp / GMP-ECM 6.4.4 B1=3000000, sigma=277117633 for P33 / Jan 5, 2014)
(53*10^237-71)/9 = 11796897091962038645836986962921480389951859<44> * 3080354615618365685495471291308975489265445299<46> * 162055902248469784236533730584911606026903011946030357655554805160989881737200582566292146648594381906498104038238933443252173319086570120917738338441<150> (Serge Batalov / GMP-ECM B1=43000000, sigma=76041713 for P44 / Feb 23, 2014) (Serge Batalov / GMP-ECM B1=43000000, sigma=116767916 for P46 / Feb 24, 2014)
(53*10^238-71)/9 = 3 * 19 * 4231603 * 20796619 * 83687137926479<14> * 140282060815367821925046278900863311697487359899025868772889819765062067249734490766402222540491645873758731747083770654912784481140064981412520058883745334158262092268623895272231317037363494283639681069518311<210>
(53*10^239-71)/9 = 73 * 4038381703<10> * 5362374206868519290783569<25> * 372516931629552681559934100827454556566575046686118742208802648307548891873223514272143511172154377719740985141978241615493606535943768657224380766029525960417926120811040332080827806112439167927860672671<204>
(53*10^240-71)/9 = 34519 * 114760162933687124167<21> * 1041688051927639822176353<25> * 57514704340160273927505413<26> * 1742617105484097253524953394593462819<37> * 798659244158718217681734564349457396648355289<45> * 17828053474165083233297922135275933027392613254822771775341629387345512080317150869303<86> (Ignacio Santos / GMP-ECM 7.0 B1=11000000, sigma=1:1781124884 for P37 / Oct 28, 2013) (Cyp / yafu v1.34.3 / Jan 27, 2014)
(53*10^241-71)/9 = 3^3 * 17 * 307 * 15749 * 319915894236529294302271<24> * 1252596246571463787988506527<28> * 66218965642774544562042866807750303229459318032017649351460475401282510178117079445003721429434627242732644540476827617396809909742699389986677599962620649407223705084893826733498989<182>
(53*10^242-71)/9 = 7 * 26758464497<11> * 10767262311395672380841089666567105043<38> * 291990578395143555686199680500247994278645527385060410088833391099013909888731533881640701099267050384756741086971346367857959314337398641546167442054098932683700743102964066585549979633851992973<195> (Cyp / GMP-ECM 6.4.4 B1=3000000, sigma=4005131439 for P38 / Jan 3, 2014)
(53*10^243-71)/9 = 761 * 2626042261<10> * 2946775106897017763042065659591367061177351362688654556991833185201319668191400630057339499768797667217188187254570897516163664931543282696350452667251211219240465029471389564227716970658171285888517206204791345488830757693037071061<232>
(53*10^244-71)/9 = 3 * 47 * 3986243727338749692699557892767337117829<40> * [104773245896398502739983593569476851007366729696065366005310437155747309530149666399585867386927728153884338481374489928850338651937726782017235834815843700413642245505951151614536168633521448512604274929<204>] (Serge Batalov / GMP-ECM B1=3000000, sigma=3281868087 for P40 / Oct 27, 2013)
(53*10^245-71)/9 = 133572770563<12> * 436126065605803970723<21> * [10108887942175381151576102707168325970775552905037286835245591192587154297276880081262407554620682913434409614597312000554489186000288391605016197144852691030264908029396449354115135714101097923159215845448526402569<215>]
(53*10^246-71)/9 = 13229 * 8384239 * 151915663222511629299427<24> * 349494334487711835510164795750898963197604939311965640710438902289292437968173055646684539640046652431153614511458675414384557833119448057694093534240250977460699217380466567782937010180766156692017796916068058313<213>
(53*10^247-71)/9 = 3 * 73^2 * 253309763429369390731249<24> * 14541675728535650468046825980249320709110936821760452770804310058175325117965939869506579616253837878625701792892245335854693245791410540689939908016442412557256536553999469223348801101913469523883326925978323441061534587<221>
(53*10^248-71)/9 = 7 * 83 * 421 * 1743914818152589833511687<25> * 3470055324237014659864405641761978249<37> * 397844597592971096937874466183565852626253517773019680354482529268559114966194094889806452731907627475477447831347576887401434233511536287650593372029409050420396703872359565564447687<183> (Cyp / GMP-ECM 6.4.4 B1=3000000, sigma=3439979135 for P37 / Jan 3, 2014)
(53*10^249-71)/9 = 1220663 * 309248077 * 681659744189993<15> * [22885632751534032193789241381507179712115014732972180897186185012178500936772404537853567981336131367440954179432732509426738988191920866575249168530910183650796029652307367704092226559191968111484111233812013433143724667<221>]
(53*10^250-71)/9 = 3^2 * 29 * 61 * 3698818471759869913252238483065692411839010670742345888379428986174793598950373022353425594428044022918716719357382632302549393184403548074171778712950749883103378486834299911367934733301230380559568424652276169140687701079636259587267689773813761<247>
(53*10^251-71)/9 = 23 * 571673 * [44787605386819942359027906489327692494994203427551497697101610679751543040749343622854695884511728610502316571284700602167664327477641245720428111030096248310461528583563839504849868101769709552632581220146367415492612407023571995581305555485839<245>]
(53*10^252-71)/9 = 1543 * 7580193307<10> * 180296596808729<15> * 80427779630462900632943<23> * [34721105511578843708146646391564244137171176053980032417947340473907177186001570477231692963795461052588882870998350877863939008541131094556743678751328549479995596865145638795849008685191666814605950723<203>]
(53*10^253-71)/9 = 3 * 11927 * 9620974899503741<16> * 22113428044645202028311211239<29> * [7735808888282026618885407282316021971849859076399175160427661561944012404465090686362824634265136391535620768147301094315506869233399353684358305694181203674812237145632576079783497187546835347260319459799<205>]
(53*10^254-71)/9 = 7 * 491857 * 171039517841535501139817028378134553303352364868211953848632802068455113954110613708830263641926381299817074849248834777148900969442305643681246752871229090943357488308561486334700907229101399358201640165706957477736382987299412195266071494324828119<249>
(53*10^255-71)/9 = 73 * [80669710806697108066971080669710806697108066971080669710806697108066971080669710806697108066971080669710806697108066971080669710806697108066971080669710806697108066971080669710806697108066971080669710806697108066971080669710806697108066971080669710806697<254>]
(53*10^256-71)/9 = 3 * 19 * 1663 * 25747481261313965122253351<26> * [24128565593254957403249460947435808692398402179174526288855517351532141617463003799274507056377807162454913373200373716142006330592365218347528442046261688199442463919196912223055396247040067579273954856165927780627888605964641<227>]
(53*10^257-71)/9 = 17 * 149 * 1321677183503922359<19> * 4093691818210079375893461271408435316801<40> * [42969236077613791850764574661388693774239334933185827171040504271965237277005238539142564504677559362422976882939581949942384868703750263238736163995198252097143773043825153120802036177114835013323<197>] (Jason Parker-Burlingham / GMP-ECM for P40 / Jan 2, 2021)
(53*10^258-71)/9 = 2551 * 32171603 * 342722021 * 3488272544891<13> * 60020247337956864272326990502685927969475822890309175241288996571744492315964077185429981009343325224516739890430900376869057709059920303797323404471214853138348679872779948985742968533188002661974057084182554035437154449396907<227>
(53*10^259-71)/9 = 3^2 * 151 * 172956499 * 235389601 * 798899609 * 84259524956329259<17> * [15811698701940532052145355749386775289861492058709781961863543162722197891934064104534089701550483772505203270217551297873307031887570112118517176379036047178800323292344180605414123018388615533822633235709305601511<215>]
(53*10^260-71)/9 = 7 * 103 * 163 * 320389 * 7099339193<10> * 16926274627187<14> * [130152820707333891313643446989379724369219499560612592308572482009138627156416114490547398174228062865281286812121777350382118757124790622179555072348356003943545653393231671132089864376543585565092824737683516742498920518885053<228>]
(53*10^261-71)/9 = 42569 * 4076003067629<13> * 34583561791292328931<20> * 981376581405360745553333332664303367997093465792320035257142719849267737429484680134169705633220842428645919039937234192850274103940737895668465421408475280711281690338374673353207528313052823668349191357702640445238779717551<225>
(53*10^262-71)/9 = 3 * 288430733 * 19238318926381<14> * 182835828530313401<18> * 19348270373564650727504146972797185371692808082261864487249053254958085065455884578928611836033612410763756445303769940927133439874858947673580724264752876934299880591495624297918072817288337830653125010128980734930830888699<224>
(53*10^263-71)/9 = 73 * 4147147 * [1945185709758952553815215150794288379387276770538412786207161142541293353736188054262294248720170292244543217231221053198275096368821676879719264368244260613310983839518605675439204279666647241601749607783305199139820234723071226968999820143358065455762651<256>]
(53*10^264-71)/9 = 751 * 111257671649<12> * 2378162207762722815961<22> * [29636163554565691291527744537457187330925496816109497060137565449708544891530737960423259769784016700171317133587373813078045709913192888494181739141868514392054849549470462948080216434782304699411889507336935308004496635620961879<230>]
(53*10^265-71)/9 = 3 * 76660422958591365286961955568425469<35> * [256059500744376325196593320478491728960370837476972410057087769636425829109423028145504434527008769256964826707804784496089888934880869526187526413753887806585131336772781857267379572484503596744474117032854037238236804192862575383<231>] (Jason Parker-Burlingham / GMP-ECM for P35 / Jan 2, 2021)
(53*10^266-71)/9 = 7^2 * 1013 * 84423442936373<14> * 140528618000050826145440639420403154540605532881406408653860759047600768901389457217349105101895766292336612190313331864514129575300674479153564697267453198510816556080130842267906379555755043091790431589400857238885612401597441599658645872946694281<249>
(53*10^267-71)/9 = [5888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888881<268>]
(53*10^268-71)/9 = 3^4 * 104123 * 4754653 * 23687689537<11> * [61995496046193491133520642576544297027777934299522512097366632038381826058789812603101397196602795002765785672960186151217390515463777523786448948891555014769806962630554344882887492794086146578606402787342748912241807580735264322287582839331567<245>]
(53*10^269-71)/9 = 109 * 1523 * 2909 * 8335609 * 18001901 * 4468854061711327<16> * [1818491860428196530837060596924420217984851052665420056470650711425996446715777944984025466893577761251294128274093626632536671236410212822169248430941391149727046240150522174801048532853500062442737843664611265877072741566158553209<232>]
(53*10^270-71)/9 = 188957 * 37422446497<11> * 48531875670671<14> * 9459694561261807<16> * 898944243349392478421679703756369<33> * [2017907492645324048876317693365102931616231226902772807238556551308426760463236697192507500263755899822909958415599208649827044494117578551528169833374598954456265157723263283152837379602691573<193>] (Jason Parker-Burlingham / GMP-ECM for P33 / Jan 2, 2021)
(53*10^271-71)/9 = 3 * 73 * 13103 * 36563 * 98395921249481168801<20> * [5704263588093205909275382990999600471238034423561381529927972468995572357657054935026176424845726987006821901324488712020649596122014752338554449725201465266387848855394975640732102894534606059637838645689996442291742661600637546213438323391<241>]
(53*10^272-71)/9 = 7 * 89 * 6151 * 17659 * 16922603 * 173117391539<12> * 2970473033240192476805096179157357051739869305704768680258182493420225139524499027889956279485336062439331846328410739745167894059418267998691426213275103907760373635025762278667968508750791327049582050489786723896488669375595789155108360034299<244>
(53*10^273-71)/9 = 17 * 23 * 5309 * 18245575451381937803<20> * [155484217451343190772030336509718813148577986436023711852066209448098962460595077624572168646024511139049920843105208049875450611421544204495092590057816007823115015204779416919181659482663477962188660059842469277837192013042198409120041002661924633<249>]
(53*10^274-71)/9 = 3 * 19 * 2352339977573<13> * 3491344827275911<16> * 1043788545403510639<19> * 337395996535439808833<21> * [357201454700826521227965286371179836041084641966452891050789534595275082917030549859337932326898946070309723148838892025627996793160642875558660552379200629036284914852258155442691679255344281654905593991453<207>]
(53*10^275-71)/9 = 29252887 * [20130966522685056312181730606243714984059142227189025441792766946007376601457794196138278211271553774808239914538653531492084486870950169427341953937363135778321260697752289847114539118442869891402133706970149267280487183671440322758190974069974320445325238800836611063<269>]
(53*10^276-71)/9 = 173 * 6911461 * 1011629606685685655483491530033957000059<40> * [4868507733885226775187613409031813563331784298394334217843738341914032228284056316685293334341867181626609192590258012026189867174869954321926910227971958335884169654474294848817659601981810243190792080637424653471143266868300803<229>] (Jason Parker-Burlingham / GMP-ECM for P40 / Jan 2, 2021)
(53*10^277-71)/9 = 3^2 * 40357 * 976514528325991<15> * [166032561041191655743361589572082612648894663137389496905026877412257824216746614103740420717172900149998591934463440519132520627686594927640034538262119877154000418169733625048973725568591925559531468679347929105868733704103304041480447355829636306618359107<258>]
(53*10^278-71)/9 = 7 * 29 * 1777 * 4663613 * 580797733 * 18108587821269793<17> * 72236854780502190264673773622429<32> * 7803507590659182296765794850750564625901<40> * [59043107731089650212301407898801508482851234211118211191682377798786038343369738520090567848241276840891678078653426175273481151678050657315298066113379045174305589551627<170>] (Jason Parker-Burlingham / GMP-ECM for P32 / Jan 2, 2021) (Eric Jeancolas / GMP-ECM 7.0.4 B1=1000000, sigma=1:2292591843 for P40 / May 22, 2021)
(53*10^279-71)/9 = 73 * 617 * 871659387077485004813117<24> * [149995601698691699203248771187432534966120003988339179370290803183983006794126746330071202942480230553710673397263621966204958949965098235245363694159649731696241369360368661783024100000293861423010454216884041727056152497160951115885469383188289465173<252>]
(53*10^280-71)/9 = 3 * 179 * 1310413399<10> * 9587255276839<13> * 275779355049197933229177316621<30> * [31651529870884297225061765263932382320525790709976364219256196844014676065404555402026975637671132473189820580878418147162120278815509631795887894844395216039825114356878641158584981828829911847224530951022861412066107265533373<227>] (Jason Parker-Burlingham / GMP-ECM for P30 / Jan 2, 2021)
(53*10^281-71)/9 = 191 * 30995843 * 50725163 * 149630587 * 654757415644987<15> * [20015769158965496598915896468607945547437224435650052430944280539179543472040437461781379585605890086480727129085253943392831081627767070115021896486851663435885546272905444552511964040737934350104109452101039578619458937426795136293440751271<242>]
(53*10^282-71)/9 = 24329 * 632101 * 16828778368437580103115116045354686350691<41> * 22754643380833141580489809572115907649676989923132972446275738009132400926430891134277191928926594672053106547290947287368761908085510105167802159118654240736076003717059000977353990986009486544403335705381451318321212913177828907079<233> (Marlon Trifunovic / GMP-ECM 7.0.5-dev B1=3000000, sigma=1:1174858263 for P41 x P233 / Apr 15, 2022)
(53*10^283-71)/9 = 3 * 319757 * 4568371 * 5872118047927<13> * 315353670722213<15> * 7256680639768014850955959933323982529555842057109727575287622032156023596764796334286814830332641125315182123229022770776532074303208130848546498599516460121600582547172493769482692687751626347161313713512103945930463925044096641380356709763791<244>
(53*10^284-71)/9 = 7 * 16883 * [4982940480186230349116092171236399157977076593436245156910915366166210210515132626131856126525320388970214238235324535152764732815671629863420421970442701355453828355563829117107562881418238878405910331515970324238996868268917075408812659301316530481963165727899483748562703724701<280>]
(53*10^285-71)/9 = 3499547702921<13> * 25966083164150221949843450767654751<35> * [64805967492241192423551481024657275249458025770641036519981054206789787608546979580619371248195100661706827182442627847137563160454110154811924734973637544871847937245233865299215951597331066226024884633378184038544796049430339757488819511<239>] (Eric Jeancolas / GMP-ECM 7.0.4 B1=1000000, sigma=1:575436933 for P35 / May 23, 2021)
(53*10^286-71)/9 = 3^2 * 59 * 457 * 242673659331054032434937131496614244577502869730490296945562803714097462320335640564596294052709634556362788878953005101183469070326368599310532082602450637659380504513959000972068261810995680866738736164739700449129419694020566821565721292507382086929367771014966554533121062562643<282>
(53*10^287-71)/9 = 73 * 227 * 347 * 509 * 2276286521<10> * 88391490855605192501690336065918548796507471545593174484049357771469360654827158553115425272551676008518352268655550173840855025132324018773042034564710315304533661952713701950300327803449373401751838772610627700830105410872675588180592118621673823316517524632503648917<269>
(53*10^288-71)/9 = 25349 * 454825738560857<15> * 11527578757311541756676952583146292001<38> * 44308739700842776862716321215035727014957447527179225157724212793925157472455003156174504482798557921124196300660838468240669448749844733416218854918592660984787187708904761745598097355728969541732407236566806149200608057493644166117<233> (Eric Jeancolas / GMP-ECM 7.0.4 B1=1000000, sigma=1:3234105753 for P38 x P233 / May 23, 2021)
(53*10^289-71)/9 = 3 * 17^2 * 83 * 4523 * 437665534201713533<18> * 3686320997092616267638652301615994157<37> * [112143494485176381688770171470651520043992091517349350064428693012603782075717634914255992913310788237645323587852368782077408136964793176145514843944143249878053183797507500870852434957487248039403567767736395383116224620117667<228>] (Eric Jeancolas / GMP-ECM 7.0.4 B1=1000000, sigma=1:3964453868 for P37 / May 25, 2021)
(53*10^290-71)/9 = 7 * 47 * 2088601 * [857002286453479615486960177334056532661295554245774706387010579595075251625237690938373183712466964952974446838338036932979549918281185684479676028350567666292259992856504333844958685691177633992618352453558035076935741451611470967907329101033362830430351357802673147658170565747089<282>]
(53*10^291-71)/9 = 7644551157801576974443<22> * 25986286344689990480998044869<29> * 29644023520050864174329981766389729407960421252099834632304169194886177524887923002902500504572147261472608239098217113968560537272871419736815998779196534445845817275146874957826252969505758062435864045528910588905968160838774066210694453943<242>
(53*10^292-71)/9 = 3 * 19 * 2081 * 14533 * 1659081022048624943<19> * 5941500002541187965473<22> * [3465512371341557277683905361827485590220604611242380521845569169980762499394873132110760279243583173780412347495686877599856209718835659195416983329202291199132788969384799818350472013666192196080761383334458942290407650462493876912775054773739<244>]
(53*10^293-71)/9 = 39631 * 40622789 * 738009172723<12> * [495640552582565727242773181820863601342574372094285554221233094111082807997932777026546566611936731010808174311414620276919483296516932869771227217464275402328132590646281451903819120940120691243870786329323919903783834658040928514398185329702788725237758528408596780033<270>]
(53*10^294-71)/9 = 103 * 167 * 257 * 599 * 2039 * 3701 * 6793 * 69322861 * 1372513397<10> * 22433545189960528346535256117<29> * 20325012059448215431490897485392890583314247337335015724942877408754160704234652081607651930547053964782899664720726933503017878987682968881245158180084974459094915405448018260682565667561708576343066529997069576713501718345469889<230>
(53*10^295-71)/9 = 3^3 * 23 * 73 * 113 * 1091 * 15831578101237<14> * [665566566780446273667502935906692976709604351681695657510238692113947514791071352482267362782168145570996204388207980681866072571155410335142774908659374008790383712097690684824123598609465435873689884340802202196717912899003930044726666009709266508387114281838774843501667<273>]
(53*10^296-71)/9 = 7 * 181 * 8717987 * [53313909226109019390027877080745430472880068299526879530934613225528845922072348416890659908470154945352609764529702352897709161103552948585586565683100044056008238441307803744706256706963150139876513352332600121635094428597793778247421251494863457418194547634282767725336532848775935289<287>]
(53*10^297-71)/9 = 5297893 * 322538681 * 269650964666785871173<21> * 12780457295781371346836664902934004209050641144410805332320342214778115146123196246351448294375924616851571377309369180364041625265051022704060040451023530461052647627816606688085115724266283347625743787218616903951634977413584149446747240633615172557405829550209<263>
(53*10^298-71)/9 = 3 * 234358480942935072081514799<27> * 700810769178302786088089519<27> * 5562163050760503445735814932603<31> * 21487552383813174925581234379301999422443455500270491815662202284729913485917823835006910262632119505843727152905988241611280542840198996474796291123325862710229381786337267117177050692030007005279934796685332681889<215> (Jason Parker-Burlingham / GMP-ECM for P31 x P215 / Jan 2, 2021)
(53*10^299-71)/9 = 97 * 18076598390170990741116180424979<32> * 95152096505632199443409193039197497<35> * [3529608648552279564303944962778412739330778151450598302040895961772498915100004723918532286718446022110011065838629407698399631480187616883398470806229387860950565730054281070246730421574012753344959669125026736776012186397035337571<232>] (Jason Parker-Burlingham / GMP-ECM for P32 / Jan 2, 2021) (Marlon Trifunovic / GMP-ECM 7.0.5-dev B1=3000000, sigma=1:3916304667 for P35 / Apr 15, 2022)
(53*10^300-71)/9 = 1783 * 64633 * 4215698302633119528917667241<28> * 5839489042280296784630977545083495892177953<43> * [2075789599570915494511204822570258756196273586024001821558627177819442740655043648220043885896130765997553118386582914936672061207629721003328957356510527343205452734479092125844070563142310530784955652384420350002609990423<223>] (Dmitry Domanov / GMP-ECM B1=43000000, sigma=1:955396446 for P43 / May 11, 2021)