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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MnDetails
7302901
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 270
TF target 267
Factored
FactorDigitsBitsDate
9019174080298567451932169.62020-06-02 03:07:18
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
Factored1999-05-02Dr James Denholm-PriceEF7BCDE39FC306966469941OS/2,Prime95,v18,(aka WU7)
Factored2002-12-09ANDERS TOP HANSENEF7BCDE39FC306965930835Windows,Prime95,v22,(aka WY1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2020-06-03Klaus Nordmann0A14E0CDCD6A1D2E1729321153
Verified
PRP without proof (not generated)
2020-06-04daveward20050A14E0CDCD6A1D2E179289053
History
DateUserTypeResult
2025-10-08Sid & AndyNF-PM1B1=2600000, B2=4388651190
2020-06-04daveward2005C-PRPM7302901/901917408029856745193 : 0A14E0CDCD6A1D2E
2020-06-03Klaus NordmannC-PRPM7302901/901917408029856745193 : 0A14E0CDCD6A1D2E
2020-06-02GdSFFactor: 901917408029856745193 / TF: 69-70
2020-06-02GdSNFno factor TF: 68-69
2020-03-07GdSNF-PM1B1=310809, B2=6216181
2018-08-05ramgeisNFno factor TF: 67-68
2016-10-01Gordon SpenceNFno factor TF: 66-67
2015-06-16VictordeHollanderNFno factor TF: 65-66
2013-11-12David CampeauNFno factor TF: 64-65
2012-09-06Squeeky_SquirrelNF-PM1B1=90000, B2=1620000, E=6
2012-04-04David CampeauNFno factor TF: 63-64
2002-12-09-anonymous-C-LLEF7BCDE39FC30696
2001-12-22-anonymous-NF-PM1B1=35000, B2=367500
1999-06-06James D-PC-LLEF7BCDE39FC30696
1999-05-02James D-PC-LLEF7BCDE39FC30696
1998-07-21-anonymous-NFno factor TF: 1-63