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
7107383
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 269
TF target 267
Factored
FactorDigitsBitsDate
3966217328605209385692168.42020-05-01 08:50:58
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
Factored1999-05-23Pawel T. JochymA692E2588C957C615055573Linux 32-bit,Prime95,v18,(aka WU2)
Factored2002-02-17Marc Getty / Phil FizurA692E2588C957C616584902Windows,Prime95,v20,NT service,(aka WW5)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2020-05-02AnthonyRaisFC66179FCD90D5F41212309153
Verified
PRP without proof (not generated)
2020-05-09NesowaFC66179FCD90D5F41179819153
History
DateUserTypeResult
2025-10-04Sid & AndyNF-PM1B1=2600000, B2=4510734690
2020-05-09NesowaC-PRPM7107383/396621732860520938569 : FC66179FCD90D5F4
2020-05-02AnthonyRaisC-PRPM7107383/396621732860520938569 : FC66179FCD90D5F4
2020-05-01TJAOIFFactor: 396621732860520938569 / TF: 68-69
2018-07-23ramgeisNFno factor TF: 67-68
2016-10-20Gordon SpenceNFno factor TF: 66-67
2015-06-21VictordeHollanderNFno factor TF: 65-66
2014-02-09lycornNFno factor TF: 64-65
2014-02-02NesowaNFno factor TF: 63-64
2011-12-20James HeinrichNF-PM1B1=135000, B2=2902500, E=6
2004-04-09Sturle SundeNFno factor TF: 1-63
2002-02-17-anonymous-C-LLA692E2588C957C61
2002-02-03-anonymous-NF-PM1B1=35000, B2=498750
1999-05-23-anonymous-C-LLA692E2588C957C61
1998-08-16-anonymous-NFno factor TF: 1-62
1998-08-09-anonymous-NFno factor TF: 1-61