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
5066987
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
4345954749911238.7old
209340034411511444.32014-01-08 15:44:18
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)
2017-09-20kkmrkkblmbrbk65596A39355FB9DB2013
Verified
PRP without proof (not generated)
2018-04-29storm551065596A39355FB9DB2465295913
History
DateUserTypeResult
2025-02-03Sid & AndyNF-PM1B1=5100000, B2=7366797900
2025-01-16Sid & AndyNFno factor TF: 68-70
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-04-29storm5510C-PRPM5066987/434595474991/20934003441151 : 65596A39355FB9DB
2017-09-20kkmrkkblmbrbkC-PRPM5066987/20934003441151/434595474991 : 65596A39355FB9DB
2014-01-08TJAOIFFactor: 20934003441151