Factor Info

ID 31557
Size 512 digits / 1700 bits
Status composite
Value 42581255437769525951919985520272917789571033740266984583457334980661242804843835271254826736284674019968917014315624535115951903480365108378573626189710231303558609789433660338353332289648028300025311034352022159173785210423667442804966436305024980722727187394458566352422752681177440900351290461399928717254687498552244466567885247515151648145186132768852619038677652308209843999825941476305675273923466573775386849957361283264264567799153293484482108912057138282297821828644258654434104846610301720570172498991

Factorizations

Primary (ID: 17148) 2909467055506170519577044616632832452708657352232253233553601781 (proven prime)
(ID: 31558) 14635414192844851011967363289114421762241064276490748028000731367195228642811118724851733473324181639943423721650400392872522634358090146397748586266971370458878740209875422939189689729428316245201463424589864161714830682602594508223819465465774877021288276639886340299075123343624870932523923790391095135921027089528546790240913017415206166801811353163974135759678433606884439471626613393381487902805437787318741559876380721216930834172798643707411 (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.