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
12806597Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
76839583826.2old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-05-13XZT640855280375089E1389555953
History
DateUserTypeResult
2022-05-13lajo321CERT
PRP Certification
Proof certified good
2022-05-13XZTC-PRP
M12806597/76839583 : 640855280375089E
PRP proof power = 8
PRP: Verified
Proof certified good
2022-05-02nordiNF-PM1
B1=400000, B2=428459850
2022-04-20nordiNF-PM1
B1=400000