Marin Mersenne 2^P-1
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MnStatusDetails
2251Composite, with 4 known prime factors. Cofactor is PRP (Probable-Prime).
Factored
FactorDigitsBitsDate
400679618.6old
778847619.62009-01-21 03:08:59
176209549398783562264350072683.92009-01-21 03:09:00
16879425058186110324239172012890.42009-01-21 03:09:00
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-11-09kkmrkkblmbrbkPRP_PRP_PRP_PRP_461413
History
DateUserTypeResult
2017-11-09kkmrkkblmbrbkP-PRP
M2251/400679/778847/17620954939878356226435007/1687942505818611032423917201 is a probable prime.
2009-01-21-Anonymous-F-ECM
Factor: 1687942505818611032423917201
2009-01-21-Anonymous-F-ECM
Factor: 17620954939878356226435007
2009-01-21-Anonymous-F
Factor: 778847