Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
7514659
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 270
TF target 267
Factored
FactorDigitsBitsDate
3096458643241092667432168.12020-05-31 23:40:50
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
Factored2000-02-16Robert Braunwart3D8CE4685BE789C80Windows,Prime95,v16,(aka WS1)
Factored2002-02-17geoff hill3D8CE4685BE789C8335273Windows,Prime95,v21,(aka WX1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2020-06-01ATH672CE50868C099B61304900553
Verified
PRP without proof (not generated)
2020-06-01marssystems672CE50868C099B61366157053
History
DateUserTypeResult
2025-10-16Sid & AndyNF-PM1B1=2500000, B2=3943416750
2025-06-18GregFFactor: 309645864324109266743 / TF: 68-70
2020-06-01marssystemsC-PRPM7514659/309645864324109266743 : 672CE50868C099B6
2020-06-01ATHC-PRPM7514659/309645864324109266743 : 672CE50868C099B6
2020-05-31chuenkitFFactor: 309645864324109266743 / TF: 68-69*
2018-07-31ramgeisNFno factor TF: 67-68
2016-09-22Gordon SpenceNFno factor TF: 66-67
2015-06-09VictordeHollanderNFno factor TF: 65-66
2013-11-30David CampeauNFno factor TF: 64-65
2013-10-18NesowaNFno factor TF: 63-64
2012-05-03James HeinrichNF-PM1B1=145000, B2=3117500, E=6
2002-04-14Geoff HillC-LL3D8CE4685BE789C8
2002-04-14Geoff HillNF-PM1B1=35000, B2=315000
2002-03-31Geoff HillNF-PM1B1=35000, B2=315000
2002-03-31Geoff HillC-LL3D8CE4685BE789C8
2002-02-17Geoff HillC-LL3D8CE4685BE789C8
2002-02-10Geoff HillNF-PM1B1=35000, B2=315000
2000-02-16-anonymous-C-LL3D8CE4685BE789C8
1998-10-29-anonymous-NFno factor TF: 1-63
1998-07-29-anonymous-NFno factor TF: 1-62