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
3461137
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 270
TF target 264
Factored
FactorDigitsBitsDate
6931650958106906102603666572789.22025-02-14 12:02:49
ECM
DigitsB1Curves
2550000280 / 280
3025000059 / 640
Estimated T-Level: 25.5
TF below 2^80 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredMartin Fahlgren10E2D0558C68EE260Windows,Prime95,v14,(aka WQ1)
Factored1999-07-27arnaud10E2D0558C68EE26528870Windows,Prime95,v18,NT service,(aka WU5)
Factored2006-04-14S45257010E2D0558C68EE260Windows,Prime95,v14,(aka WQ1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
Certified Good
2025-02-14Andrey Dobrynin45A981E2D866B96D1327455453
History
DateUserTypeResult
2025-02-14ANONYMOUSCERT
Proof certified good
2025-02-14Andrey DobryninC-PRP
Proof Certified Good

Proof Power: 7

2025-02-14Andrey DobryninF-ECMFactor: 693165095810690610260366657 / ECM curve 29, B1=129267, B2=275660385, Edwards Sigma=962156178993132
2024-09-25JossNF-PM1B1=10000000, B2=15858092250
2024-01-10JossNF-PM1B1=2422770, B2=5118553440
2024-01-10JossNF-PM1B1=2422770, B2=2514892380
2022-06-15TJAOINFno factor TF: 69-70
2021-03-05axnNF-PM1B1=20000000, B2=1000000000
2021-01-07axnNFno factor TF: 68-69
2019-02-11TJAOINFno factor TF: 67-68
2017-02-08Gordon SpenceNFno factor TF: 66-67
2016-02-23Mark RoseNFno factor TF: 62-63
2015-04-18Gordon SpenceNFno factor TF: 65-66
2015-02-07VictordeHollanderNFno factor TF: 64-65
2015-02-07VictordeHollanderNFno factor TF: 63-64
2014-09-22HBendtzNF-PM1B1=500000, B2=10000000, E=12
2014-08-21JossNF-PM1B1=78544
2012-08-18GrunwalderGIMPNFno factor TF: 1-63
2011-11-08USAFSSNF-PM1B1=60000, B2=990000, E=6
2011-07-30markrNFno factor TF: 61-62
2009-07-06Carsten KossendeyNF-PM1B1=20000, B2=235000
2009-03-21S485122NFno factor TF: 60-61
2006-04-14-anonymous-C-LL10E2D0558C68EE26
2006-04-14-anonymous-NFno factor TF: 1-60
1999-07-27arnaudC-LL10E2D0558C68EE26