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
8334019
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
1174096824622750295532166.72015-12-27 22:23:46
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
Factored1999-10-21Juergen MuellerEED77CBB6861FA8F888041Windows,Prime95,v18,(aka WU1)
Factored2002-11-24Ars Technica Team Prime RibEED77CBB6861FA8F3482534Windows,Prime95,v22,NT service,(aka WY5)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-14Oliver Kruse9253913C96F3F9771592223853
Verified
PRP without proof (not generated)
2020-04-24marssystems9253913C96F3F9771235782453
History
DateUserTypeResult
2025-03-14beepNF-PM1B1=1750000, B2=6798611820
2020-04-24marssystemsC-PRPM8334019/117409682462275029553 : 9253913C96F3F977
2018-10-14Oliver KruseC-PRPM8334019/117409682462275029553 : 9253913C96F3F977
2015-12-27snme2pm1FFactor: 117409682462275029553 / TF: 66-67*
2015-05-28VictordeHollanderNFno factor TF: 65-66
2014-01-07David CampeauNFno factor TF: 64-65
2012-01-17kurlyNF-PM1B1=95000, B2=1662500, E=6
2002-11-24Team Prime RibC-LLEED77CBB6861FA8F
2002-09-07-anonymous-NF-PM1B1=35000, B2=271250
2002-09-07-anonymous-NFno factor TF: 1-64
1999-10-21Team_DeutschlandC-LLEED77CBB6861FA8F
1999-01-17-anonymous-NFno factor TF: 1-63
1998-12-21S00030NFno factor TF: 1-62
1998-09-06-anonymous-NFno factor TF: 1-61