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
12802483Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
67626812000571342.6old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-05-13XZTA89B9307B33C41401953206153
History
DateUserTypeResult
2022-05-13slandrumCERT
PRP Certification
Proof certified good
2022-05-13XZTC-PRP
M12802483/6762681200057 : A89B9307B33C4140
PRP proof power = 8
PRP: Verified
Proof certified good
2022-05-01nordiNF-PM1
B1=400000, B2=428459850
2022-04-19nordiNF-PM1
B1=400000