Factor Info

ID 20474
Size 319 digits / 1057 bits
Status composite
Value 1505891153555962516944003836432370364675688345859435603571710371614739277850035203195540499466034588531331383721266039792286157749647345312216086321754876822082059176097487691986874761752968727263208105408270756002749615135162888832591401938866900637205408807288043213140129054685637712856641681000280440873658345633931

Factorizations

Primary (ID: 16281) 784646826705980283039372085276899721 (proven prime)
(ID: 28634) 1919196130414281303147795899049126572649013229094117877205761183755098337693856626014960964056852752502250881359361568686149904965159799264941797659321234070415047654551584075531940268121290414016554802862918617440226059720412059832010033268929650806902794634262139679891891250897011 (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.