Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
3576233
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 271
TF target 264
Factored
FactorDigitsBitsDate
69908211944647080099528492582.52025-03-21 02:12:21
ECM
DigitsB1Curves
2550000280 / 280
3025000067 / 640
Estimated T-Level: 25.5
TF below 2^80 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredRobert Friberg8F7B09A5330069D40Windows,Prime95,v14,(aka WQ1)
Factored1999-07-30John A. Churchill,Sr8F7B09A5330069D42157598Windows,Prime95,v18,(aka WU1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
Certified Good
2025-03-21fordobr6D643A4212E65B041115174453
History
DateUserTypeResult
2025-03-21ChuckCERT
Proof certified good
2025-03-21fordobrC-PRPM3576233/6990821194464708009952849 : 6D643A4212E65B04
Proof Certified Good

Proof Power: 7

2025-03-21fordobrF-ECMFactor: 6990821194464708009952849 / ECM curve 36, B1=130581, B2=275660385, Edwards Sigma=6780732853491989
2025-02-25JossNF-PM1B1=20000000, B2=20124394290
2025-02-21JossNF-PM1B1=20000000, B2=10027887870
2022-10-09mikrNF-PM1B1=6000000, B2=7731126942
2022-10-07JossNF-PM1B1=1000000, B2=1380943200
2021-11-11Aaron HavilandNF-PM1B1=700000, B2=12600000, E=12
2021-11-05ArtyomPNF-PP1Start=6/5, B1=50000, B2=2500000
2021-11-05ArtyomPNF-PP1Start=2/7, B1=50000, B2=2500000
2021-03-16-anonymous-NFno factor TF: 70-71
2021-03-16-anonymous-NFno factor TF: 69-70
2020-12-22axnNFno factor TF: 68-69
2018-11-05TJAOINFno factor TF: 67-68
2017-05-13JossNF-PM1B1=350000, B2=3500000, E=6
2017-01-20Gordon SpenceNFno factor TF: 66-67
2016-04-08USAFSSNF-PM1B1=175000, B2=4681250, E=6
2016-02-26ramgeisNFno factor TF: 65-66
2016-02-23Mark RoseNFno factor TF: 1-60
2016-02-23Mark RoseNFno factor TF: 62-63
2015-01-30VictordeHollanderNFno factor TF: 64-65
2015-01-30VictordeHollanderNFno factor TF: 63-64
2012-07-02GrunwalderGIMPNFno factor TF: 1-63
2011-12-24Squeeky_SquirrelNF-PM1B1=85000, B2=1572500, E=6
2011-06-17markrNFno factor TF: 61-62
2009-07-09Carsten KossendeyNF-PM1B1=20000, B2=245000
2009-03-15S485122NFno factor TF: 60-61
1999-12-01John ChurchillC-LL8F7B09A5330069D4
1999-07-30John ChurchillC-LL8F7B09A5330069D4