Marin Mersenne 2^P-1
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MnDetails
7690621
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 269
TF target 267
Factored
FactorDigitsBitsDate
3342427137125291965508172478.12020-06-09 00:34:04
P-1 factors
DateFactorsB1B2
2020-06-09334242713712529196550817
72116515144458
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
Factored1999-08-07Gary O'BrienB3A86A6B9D53A8CF4728463Windows,Prime95,v18,(aka WU1)
Factored2002-05-05Moritz KunzeB3A86A6B9D53A8CF624426Linux 32-bit,Prime95,v20,(aka WW2)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2020-06-10Klaus Nordmann365278E59D6F9A1B1642197353
Verified
PRP without proof (not generated)
2020-06-11Team_Inspector365278E59D6F9A1B150038753
History
DateUserTypeResult
2020-06-11Team_InspectorC-PRPM7690621/334242713712529196550817 : 365278E59D6F9A1B
2020-06-10Klaus NordmannC-PRPM7690621/334242713712529196550817 : 365278E59D6F9A1B
2020-06-09GdSF-PM1Factor: 334242713712529196550817 / B1=721165, B2=15144458
2020-03-06TJAOINFno factor TF: 68-69
2018-07-31ramgeisNFno factor TF: 67-68
2016-09-19Gordon SpenceNFno factor TF: 66-67
2015-06-12VictordeHollanderNFno factor TF: 65-66
2013-12-09David CampeauNFno factor TF: 64-65
2013-10-11NesowaNFno factor TF: 63-64
2012-08-06NesowaNF-PM1B1=95000, B2=1757500, E=6
2002-05-05Smoker88C-LLB3A86A6B9D53A8CF
2002-03-31Smoker88NF-PM1B1=40000, B2=410000
1999-08-07-anonymous-C-LLB3A86A6B9D53A8CF
1999-03-01ANONYMOUSNFno factor TF: 1-63
1998-08-09-anonymous-NFno factor TF: 1-62