Factor Info

ID 21308
Size 513 digits / 1704 bits
Status composite
Value 640156652130527154688495157222531027512485746670921182972570347949140830076031755085911626060927088997756852475381860948469512417185137222089992616474229165363599955367569854889217739032230756339349872077212199070493187083080791244443038718973277685239098625987588364032061659670756810931722499865010011699905044529618382126409145353894530166370169356982919628519731272029370470612049659407299600499303455331878883819863290577213734505417081665459066130290443960908170708130326873544605805765112212415664215430389

Factorizations

Primary (ID: 6962) 61987798571492538535407169970847649401713984031443364728525222913762930459022525408461747036235913612179097660870596482579273707316245828905106436905278680161 (proven prime)
(ID: 29709) 10327139644945024554497315631485744926616081022660633659558839585536385571581716282731578049914726761856022942044306561607162121973941729072912286785136328140210940610087440444230425788786149942602631355466037197521981420267033858981858387800050131008289133657283119552263622943423062649378378206890642901544645290142117129311727847895081832034364427702549 (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.