Factor Info

ID 64016
Size 291 digits / 967 bits
Status composite
Value 641321140766815609310168686570165299863345106881416242668740888167063549684498863772984832448441508631201399398692713825008868954037100828198882810481668853207255631361112968801548742975222536139506874981882741085108771416496688750101572271887612453758032845760802724904753938155691143973007

Factorizations

Primary (ID: 63370) 281880352305551730895009697 (proven prime)
(ID: 64017) 2275153750594289178281608045807084868763290324057097724979841169855762134056970088864705624928319902980534349865814854003752723715905131495628610717138218950575925488474714226880161206702501224317570362770694487515035440622817354457132576191043962014805179612189231 (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.