Factor Info

ID 172176
Size 551 digits / 1828 bits
Status composite
Value 12981918865953753889743670041897150385435522677262140164025981300799066822399044822639598287662591261443138735925266224161381478341672546503548453900203069206793631645878380481647468584594378756390658580737180376691397764478935412849776534510489132616365172054900557438830142229828659343071245708795549545763225293238580722621350706886971795559356851393217742386117179092057872346344331980203084221690791340048358836573625054448843354446282165994992868812254719038765497374605984116436193184584819872060125959450299864401147980798555705515809427863761

Factorizations

Primary (ID: 171573) 1853538829441275428249557348590247813078823132379413240512652082570904930167293480350573460118208977243762993233219869629119802600439727014436909818978170671887767260884733310339813555126417621180008391017194888807509471794095473035426904505678943897939 (proven prime)
(ID: 172177) 7003855899726136451061004661815468950306745934183894893990753200618506452127899370365702193260811647469009626674947981705264880214299474764708716471473907608080421252048183092741868928776970867075422569787327526051160448240305627165761141637133881327866761753251534143159468017592789817295212420299 (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.