Factor Info

ID 21205
Size 468 digits / 1555 bits
Status composite
Value 991067556551986827087180913416531720928996592585719676700488437385408534574351913468155873145657210523899290377797983692122978688400433855869890471638087266859630193320362880502861051261751784544322735452019331033551096727164785817337247587691236743633466052618597426781537308436082465875835198986549795175318571492006545009219050969215819885551575089015260557437839246385480744832621638226381554237321271598094028172248649460674465757985432531501253591365372628408831

Factorizations

Primary (ID: 6823) 406875383561091922623241829 (proven prime)
(ID: 21206) 2435801222177352607758154552858628141814582331277089150614929437216193899661494761962168827794870389906992020016933222324198950087634732594818756369829341548887917085469251099041502640752628998076957513148654910756081691691426809096806483242211915479960310574336491803895332831413119597273127211343340417358049599842719666769032313158855402573571983650090232171583173048749700549956628521810793125169751068585259495944413001149029945341947539 (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.