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
5036989
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
120887737926.8old
34150785431031.72008-09-08 00:22:39
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-11-22kkmrkkblmbrbk6C50ED467ECB20BE2411920153
Verified
PRP without proof (not generated)
2018-04-25storm55106C50ED467ECB20BE2108259853
History
DateUserTypeResult
2025-02-11Sid & AndyNF-PM1B1=5200000, B2=7415746800
2025-01-07Sid & AndyNFno factor TF: 68-70
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-04-25storm5510C-PRPM5036989/120887737/3415078543 : 6C50ED467ECB20BE
2017-11-22kkmrkkblmbrbkC-PRPM5036989/120887737/3415078543 : 6C50ED467ECB20BE
2008-09-08Will EdgingtonFFactor: 3415078543