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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Exponent Range:





MnDetails
2463533
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
38572852898148957591961.72010-04-18 02:04:53
ECM
DigitsB1Curves
2550000206 / 280
Estimated T-Level: 23.7 ⓘ
TF below 2^74 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredEthan O'ConnorD57A4D06BB2A06060Windows,Prime95,v14,NT service,(aka WQ5)
Factored1997-12-21Ethan O'ConnorD57A4D06BB2A06060Windows,Prime95,v14,(aka WQ1)
Factored1999-05-09Nathan CollinsD57A4D06BB2A06061833582Windows,Prime95,v17,(aka WT1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-13Oliver KruseC00A0818A0DCF22C1175528353
Verified
PRP without proof (not generated)
2017-11-29noknoDD201EC3D3F5D47B1013
Verified
PRP without proof (not generated)
2017-11-29storm5510C00A0818A0DCF22C1110583053
Verified
PRP without proof (not generated)
2017-12-04kkmrkkblmbrbkDD201EC3D3F5D47B1152813013
History
DateUserTypeResult
2022-03-10LordJuliusNFno factor TF: 1-60
2018-09-28alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-12-04kkmrkkblmbrbkC-PRPM2463533/3857285289814895759 : DD201EC3D3F5D47B
2017-11-29storm5510C-PRPM2463533/3857285289814895759 : C00A0818A0DCF22C
2017-11-29noknoC-PRPM2463533/3857285289814895759 : DD201EC3D3F5D47B
2017-10-13Oliver KruseC-PRPM2463533/3857285289814895759 : C00A0818A0DCF22C
2010-04-18DougalF-ECMFactor: 3857285289814895759
2009-01-15Sturle SundeNFno factor TF: 60-61
2003-10-31Team Prime RibNF-PM1B1=15000, B2=232500
2003-10-14-anonymous-NF-PM1B1=2048, B2=204800
1999-05-09-anonymous-C-LLD57A4D06BB2A0606
1999-05-02-anonymous-NFno factor TF: 1-59
1997-12-21Ethan O'ConnorC-LLD57A4D06BB2A0606
1997-12-21Ethan O'ConnorNFno factor TF: 1-58