Factor Info

ID 164755
Size 657 digits / 2181 bits
Status composite
Value 212521505488929060438007879745175688567407714675995821659751261156550297542700386245727535621453572442318132973848736167955722212727421548245891874675728257305995630362921002610406756794980970167075566610691120984878708347230387423267907244921160101446315013158770581197014227335275975738486771925107911490913775700771572988846809985090145325104838144348693763535571754398847140510018115614921603586310418835893135505782301311545590909526664734325287470946634363449348517509404581244665775380144670755942808085812541110819622863117606770720354620152263686545455449803778666461772933761855093059444762849036507949663233203138206862566905419446705007141426249

Factorizations

Primary (ID: 163611) 551596578764505702278141 (proven prime)
(ID: 164756) 385284306811593401296017326575787517448207351306847113936931729858709454436574161801681962595050662025988062090472222489548009249885699324433008088960057617483600539444851510536448115537117895281206635256465000005251825080968695995971134528414251065294193552473628828943345065672141356118854136022425189634211092059335680229308189727855203133986262545219328759425858922959711376571071159294123489046279785025517139084968955872633058774487094791510363171302787695126130084985247768831557766222688715203987314958225291517370979643168707214602899435843167991397338383509282641616055292114417258529413678291701594773552229728538952553789 (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.