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
7611113
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 269
TF target 267
Factored
FactorDigitsBitsDate
92583137365436164787592273.02020-05-05 09:26:35
P-1 factors
DateFactorsB1B2
2020-05-059258313736543616478759
100000020000000
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
Factored2000-01-25wayne ashburn4C8FA8F3A6985AE41191937Windows,Prime95,v19,(aka WV1)
Factored2002-06-02Robin Tremblay4C8FA8F3A6985AE45342013Windows,Prime95,v20,(aka WW1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2020-05-05ATH7D84CC79042FD2FF1446965353
Verified
PRP without proof (not generated)
2020-05-07marssystems7D84CC79042FD2FF1395215753
History
DateUserTypeResult
2020-05-07marssystemsC-PRPM7611113/9258313736543616478759 : 7D84CC79042FD2FF
2020-05-05ATHC-PRPM7611113/9258313736543616478759 : 7D84CC79042FD2FF
2020-05-05ThaF-PM1Factor: 9258313736543616478759 / B1=1000000, B2=20000000
2020-03-20TJAOINFno factor TF: 68-69
2018-07-31ramgeisNFno factor TF: 67-68
2016-09-13Gordon SpenceNFno factor TF: 66-67
2015-06-09VictordeHollanderNFno factor TF: 65-66
2013-12-04David CampeauNFno factor TF: 64-65
2013-10-11NesowaNFno factor TF: 63-64
2012-07-18NesowaNF-PM1B1=95000, B2=1757500, E=6
2002-06-02-anonymous-C-LL4C8FA8F3A6985AE4
2002-02-24-anonymous-NF-PM1B1=40000, B2=400000
2000-01-25-anonymous-C-LL4C8FA8F3A6985AE4
1998-12-13-anonymous-NFno factor TF: 1-63
1998-10-29-anonymous-NFno factor TF: 1-63
1998-10-25-anonymous-NFno factor TF: 1-63
1998-10-11-anonymous-NFno factor TF: 1-62