Factor Info

ID 144767
Size 649 digits / 2154 bits
Status composite
Value 1881689258829740003434513986732872776831469631437493200989262470061895857523516412996568691156116281707048638597525479315965786393948387256250945152198552656338319580929283672730639617215732575546860800530423374239553087943759914541384083955266257087865267061092754766743615063580827111833140216429105053849812983502132412533276013888574608675546443971169709691535032842964799836543414683491021281648517643362000044519997410971148643782970742537835056691364334180269347299088513228216368392361798408766143611893225490901261500138827973296351422417057408791833050905923274699045986465764494097957677847690571221849860428852128447527956637147609505773

Factorizations

Primary (ID: 143151) 87158329476077118485754807583501 (proven prime)
(ID: 180626) 21589322215568837867302502616547255758032508468785426261196949314864446464382715131017638910051485764806763333641040951199946170935742767279531696586494609678644175319792857870079207681988798255287389189658524003774319032414577203100159940440721669782570505072420870150106976285877134784886529173653399033187576612606393518437828904894408541369105248490777381983520739686579265744540000503639838670584051117536754828140154927889144335897673975554851707267663192369167939115029285653881342386136846633385628963340406580933429564162822772483168372574670745768840386168584527185200159127091220987064780542393058604210273 (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.