Factor Info

ID 120778
Size 512 digits / 1699 bits
Status composite
Value 21091980045518983795234490363218042058528144241580852293762222757494956888591804442479364128471465603400890686158181728398451693590059804889965688945484214345173266503309449351398446366945466884736795506975815375607109357730564175333264704502868792595758701745345543032924914248150271858532818483360555987191160433007434252889602264031409181820699247391645894905832223583144849768831419912387039444711788620266038368057145074870791628587015993952704680054038919101663714667388588873774216076071458727902961880571

Factorizations

Primary (ID: 120780) 171909906447742921893873091164634791012541761841 (proven prime)
(ID: 120781) 122692057027734537231769077773527352683543964187573570326851531986932154161496246339438568402723076430930957422624175108293905045799431631566075406550604916929362388168422486170884700787509783005011603856376457335481868995439745230872026456520971121333631762362619501978932774805601987940773285948343266522731954456368433899131651421455156972680478357346204339621221517951652553424843082475187764090785321675211573878308155961037286181985936960314013060239404023531 (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.