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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Exponent Range:





MnDetails
2297291
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
310593743211134.9old
3099321233931238.22008-07-14 20:22:49
ECM
DigitsB1Curves
2550000280 / 280
30250000132 / 640
Estimated T-Level: 26.0
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-11Oliver Kruse048021F7E04C79C32013
Verified
PRP without proof (not generated)
2017-11-22storm5510048021F7E04C79C3293240413
History
DateUserTypeResult
2017-11-22storm5510C-PRPM2297291/31059374321/309932123393 : 048021F7E04C79C3
2017-10-11Oliver KruseC-PRPM2297291/31059374321/309932123393 : 048021F7E04C79C3
2016-04-28alpertronNF-PM1B1=500000, B2=15000000, E=12
2008-07-14George WoltmanF-ECMFactor: 309932123393