Factor Info

ID 28279
Size 647 digits / 2147 bits
Status composite
Value 18058640270889899429746772109380668086037340088246929453065348973573628022665672742126273736577733873867983640849881647737303425727404948602365597675471965150601870534149454292091467818400562864973487877347264245515659505496531437118193555554089306648078210527455301096508909229615154603650749618910858733221005553123188274305015627560276813270925192003387693040128465275725575516052844641255035981049304704195971671738889030233640802954331985061534654633348703810376184952481206122467744438363545917700752082221173088467689161042414689660600678579332226994587566090415510449743669341731127383778570052050914474400924032348847523160375831515950761

Factorizations

Primary (ID: 2170) 19721061166646717498359681 (proven prime)
(ID: 28280) 915703273687503662567759992803006708303986967158721550227068854444700047199186694901487211985837214762211217411793196048866592790495038183132392574558078047456051876331385802035455660363257376266458742165591774733670269496213496453015128103451668074763859200275244545067473197505763968632647578361358636446593608331348137231695403669364922964822371530968871700739167599360313324906114327801896529093486927715948125276954466919122495834600316283199829604563996828355490413206298402119983051554552334134982995884753190314330596631343010379306814792325298923597796457294649745950198762325956384710871163343432637261458768681 (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.