Factor Info

ID 139854
Size 651 digits / 2161 bits
Status composite
Value 257363506391804846941873703155932324059690543930517724470390845394601462799748567738048347966070295429193255945683761803808179000127426049214474731581526836254065108353657706635009954696670917532229839606160814965324710604035632016373172621840864873208028670963993398250524041313623005559487628582295596933315889630665884084309008179067063509096756605639490145029751079322972469030001414276401433229587924290734804466413785685328666558305760403674389991810705239050754658239461706739783697504005934296199979766526710713535425432831786810886273428437410916021194326398957360749729819470569205836119695441087421204478841297086977040371002159578915052091

Factorizations

Primary (ID: 138885) 4298038738591350241903359894361937263902417766066948735111854394786520954312466554848504069671001 (proven prime)
(ID: 174739) 59879289612022853421011358867265000041797557758493778230027985761544482633493032938787811256785962074471893047770223951115635251668449057745417965838554785724144087422558189326730412202163829936821668238078443103777875414922976655202119258902553430016026879445723564017624894313465670979114837792683329028734288602546324025030653629958435145110013495576726905659158879533810720122469336300280803673288351879304375029387444093576972851883799339957137402380119751980182487966621402540661394576993760534608388635468519355580259297622794845687893341613991091 (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.