Factor Info

ID 165581
Size 1322 digits / 4389 bits
Status composite
Value 11987457086285745661041605440012659101151305427031541866432180782508443220890294529340360303234228825225466239012809176603284586888703238449486825953647658230824025567267569081438530260152105471088270540165970715367583832111546044732848958046462315946771927201525865632938103001565577861486729859245802406871646506730768863482499224783254912171665345555416202363746242592664677816977848180755160934359406379141734427878633106490469814991600647760007589019401687170982371136764159319447720857724691127966784158967269898391356488042934997501506995604587273628057713142199243446119420064631556412442533662094501730135487089167799656665053668022785016515679548617876729193066764193440035534366666717516018759433235163492075853835580008063822701169235044637808697717401710669315025172893016225526131245541783653760565301923769125071340797288710785599496043907518715931265657433914838013501301247452614148103508163766991391257156065768677884791090007690279962541753599237483460008405016804145576188774728831417197476414088957299334317370643768884674471502752919360571557308644870648506502788638916972319509386124964291993318638949319886800003043449710690132776792715486718604498075207034614349629238800012794893511918800205627912322562815333300598128995932076561326340626948502730610711826566947321503321582341273204015843010893

Factorizations

Primary (ID: 163765) 251640048785422764225779 (proven prime)
(ID: 165582) 47637318241452217047491103949429531419472438972537492332871418233139199584776474281461090040258210173918692315307501102494302213679313906783630990889447139394418703258956059765021955654115637121720969989531664672562508079794501818811560057262971093018690245607919765048924310662579169119805785219282875085334248061804294493803491180561307911406539626265979660347769399232636505074112758748162596247733411477609982143096216972848023792887974955796848333696904830049581064062261136263338926326540609543130005309319093894676610992292254710332717199268266691414024664107006282554261312245826964320240103683383386472038967521926905114946199654765875988174113864624394721364421238988776694846916605080361487349093533284404173197748982111677266777562179069554013180263457918230583539754526027504332284147839484993384095950690884018259411405027789170072224471696003176384763310369272422553750343444721177854957811210498312224145125755382653722970184360382920041812037752049633594891680603625744390506575460024671417743017816674670762329947676685865201493757822428401438672882654260797438424793040847389197720044351357736090563076123249201328029512686415471429246081483576223629057112595758645166306689036393620350348951486132250549011288544981057566891004780958535138047166254500820250205618050067740850367 (composite)

Primary factorization keeps track of the smallest (known) prime factor. Secondary factorizations are old results kept when a new smaller prime factor is found, which occasionally happens with ECM.