Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
6916289Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
196422607611134.2old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-01-29AnkanDas9658953589149F481153296653
Verified2019-01-26Zero9658953589149F481480589053
History
DateUserTypeResult
2023-12-27Stef42NF-PM1
B1=569000, B2=1280664000
2019-01-26ZeroC-PRP
M6916289/19642260761 : 9658953589149F48
PRP: Verified
PRP without proof (not generated)
2018-01-29AnkanDasC-PRP
M6916289/19642260761 : 9658953589149F48
PRP: Verified
PRP without proof (not generated)