Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
11937817Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
13863148125771340.3old
6412602217490474493432169.12021-11-20 12:28:05
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-12-05LaurVF6EA00BA0AB6B02C2265423653
P-1 factors
DateFactorB1B2
2021-11-2064126022174904744934340000012000000
History
DateUserTypeResult
2023-05-17nordiNF-PM1
B1=400000, B2=428459850
2021-12-05George WoltmanCERT
PRP Certification
Proof certified good
2021-12-05LaurVC-PRP
M11937817/1386314812577/641260221749047449343 : F6EA00BA0AB6B02C
PRP proof power = 8
PRP: Verified
Proof certified good
2021-11-20nordiF-PM1
Factor: 641260221749047449343 / (P-1, B1=400000, B2=12000000)
2021-11-18nordiNF-PM1
B1=400000