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
2518877
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
740549839929.5old
23123290871031.12008-07-14 20:24:33
ECM
DigitsB1Curves
2550000142 / 280
Estimated T-Level: 22.5
TF below 2^70 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-14Oliver Kruse02D6A1B20E8895442158808653
Verified
PRP without proof (not generated)
2017-11-30storm551002D6A1B20E889544255607953
History
DateUserTypeResult
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-11-30storm5510C-PRP
M2518877/740549839/2312329087 : 02D6A1B20E889544
2017-10-14Oliver KruseC-PRP
M2518877/740549839/2312329087 : 02D6A1B20E889544
2008-07-14George WoltmanF-ECMFactor: 2312329087