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
3678601
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 271
TF target 264
Factored
FactorDigitsBitsDate
1659529822548044704072732477.12025-03-15 13:14:51
ECM
DigitsB1Curves
2550000130 / 280
Estimated T-Level: 22.3
TF below 2^69 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredMike TrampeEB4E2DE8D6C76B6E0Windows,Prime95,v14,(aka WQ1)
Factored1999-10-07Brian SchmidEB4E2DE8D6C76B6E3251985Windows,Prime95,v17,NT service,(aka WT5)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
Certified Good
2025-03-15fordobr59297F2E1805ABC81276755153
History
DateUserTypeResult
2025-03-15pomakisCERT
Proof certified good
2025-03-15fordobrC-PRPM3678601/165952982254804470407273 : 59297F2E1805ABC8
Proof Certified Good

Proof Power: 7

2025-03-15fordobrF-ECMFactor: 165952982254804470407273 / ECM curve 1, B1=121594, B2=194584005, Edwards Sigma=2006583634128626
2025-03-06TJAOINFno factor TF: 70-71
2024-08-17JossNF-PM1B1=10000000, B2=14686021350
2023-12-22JossNF-PM1B1=2364431, B2=4778283510
2022-10-28JossNF-PM1B1=1000000, B2=1153983600
2022-10-12JossNF-PM1B1=1000000, B2=1033646250
2022-10-11JossNF-PM1B1=1000000, B2=234765300
2022-09-27JossNF-PM1B1=1000000, B2=130364850
2021-02-28axnNFno factor TF: 69-70
2020-11-13axnNFno factor TF: 68-69
2020-10-30axnNF-PM1B1=30000000, B2=600000000
2018-09-24TJAOINFno factor TF: 67-68
2017-02-15Squeeky_SquirrelNF-PM1B1=230000, B2=6900000, E=12
2017-02-12JossNF-PM1B1=241228, B2=2412280, E=6
2017-01-29JossNF-PM1B1=167520
2017-01-03Gordon SpenceNFno factor TF: 66-67
2016-12-30JossNF-PM1B1=129600
2016-12-25JossNF-PM1B1=108000
2016-06-28JossNF-PM1B1=90000, B2=3285000, E=6
2016-02-23Mark RoseNFno factor TF: 1-60
2016-02-23Mark RoseNFno factor TF: 62-63
2015-10-20ramgeisNFno factor TF: 65-66
2015-01-25VictordeHollanderNFno factor TF: 64-65
2015-01-25VictordeHollanderNFno factor TF: 63-64
2012-06-05GrunwalderGIMPNFno factor TF: 1-63
2012-02-13Squeeky_SquirrelNF-PM1B1=90000, B2=1642500, E=6
2011-05-27Grant McCrackenNFno factor TF: 61-62
2009-07-12Carsten KossendeyNF-PM1B1=20000, B2=260000
2009-03-09S485122NFno factor TF: 60-61
1999-10-07-anonymous-C-LLEB4E2DE8D6C76B6E