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

PrimeNet Exponent Status

Exponent Range:





MnDetails
7815337
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 267
Factored
FactorDigitsBitsDate
205023615274991916892064.2old
LL
StatusDateUserResidueShiftSoftware
Factored1999-08-07Xan Tolbert815329974092D71B2279292Windows,Prime95,v18,(aka WU1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2018-05-15storm55105B5028F171B8649B1391129653
Verified
PRP without proof (not generated)
2019-10-12Igvan285B5028F171B8649B1767046853
History
DateUserTypeResult
2024-02-04Stef42NF-PM1B1=843000, B2=1382772300
2019-10-12Igvan28C-PRPM7815337/20502361527499191689 : 5B5028F171B8649B
2018-05-15storm5510C-PRPM7815337/20502361527499191689 : 5B5028F171B8649B
2002-05-18-anonymous-F-PM1Factor: 20502361527499191689
1999-08-07-anonymous-C-LL815329974092D71B
1998-09-13-anonymous-NFno factor TF: 1-63
1998-08-09-anonymous-NFno factor TF: 1-62