Factor Info

ID 21815
Size 638 digits / 2117 bits
Status composite
Value 16093295349261575995704812380817345697153988445991234845852996513183147012361080199521339309854368321750790285264015718187199164660432755324411727271773904329625750384471844173917843429104377836655165901738342841571650089243142885383552812680423365822773931323947778613970075496208709977128630951929467206451885684150759626274989671629716409697820017559760113156044856487350067623250469346853282605408368402433483194943314816080434099965509152198337453920371298927704825886152310828702896211702998888448570084909704020301477166826621916268883999094925370867948209133838759376418303637558348220226502228290787043629824213745786027333109271

Factorizations

Primary (ID: 6924) 64613577662440706821 (proven prime)
(ID: 21816) 249069869390879809495707669108350553126440611691651193571220849439666779408547479942341814134684675333589184596981719661203445973541278377620864642437055949347224272950767347952330361113346292631839207944839110228669605000176956780886062578976106652293893373333919763653391825175606112222155035998041683779005974390878740392277801782542492372496845854176256561719868333954043081064502852021323818977430226388821510063161296837525343461239247491811507802123455582520786693144756262246854443287216615377296580881724894829225170964963162068463107873366116196800682234533749479259809485819821932098622010611202572088473451 (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.