Factor Info

ID 42904
Size 262 digits / 870 bits
Status composite
Value 7828402779879610207055311353781979781596281651224293428095450885225176716073559200564216143697559851804067211717606908029313643590841182770282460459911769159061755475690866736953678982741871828957974615962589087741914493313205299639759571682561550140494993610789

Factorizations

Primary (ID: 12) 1966344318693345608565721 (proven prime)
(ID: 42905) 3981196327345994963559575877852601084264708818345754398800687006611352482578276273057835253330050824521749644443269578527468425575463703353667617428563980623358186225950547092392775465636024635067777930977531364577695276311457006964843309 (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.