Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
7355233
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 269
TF target 267
Factored
FactorDigitsBitsDate
251795934197909369779864092684.42020-05-03 14:49:32
P-1 factors
DateFactorsB1B2
2020-05-0325179593419790936977986409
10000000
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
Factored1999-06-26Craig HaynalF3BC3DB57773B2016500470Windows,Prime95,v18,(aka WU1)
Factored2002-04-07Ars Technica Team Prime RibF3BC3DB57773B201830775Windows,Prime95,v21,(aka WX1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2020-05-04Oliver KruseD09E8964F46DBC7B16627153
Verified
PRP without proof (not generated)
2020-05-06arnaudD09E8964F46DBC7B1427338253
History
DateUserTypeResult
2025-10-13Sid & AndyNF-PM1B1=2500000, B2=4345024530
2020-05-06arnaudC-PRPM7355233/25179593419790936977986409 : D09E8964F46DBC7B
2020-05-04Oliver KruseC-PRPM7355233/25179593419790936977986409 : D09E8964F46DBC7B
2020-05-03ThaF-PM1Factor: 25179593419790936977986409 / B1=1000000
2020-04-17TJAOINFno factor TF: 68-69
2018-08-05ramgeisNFno factor TF: 67-68
2016-10-06Gordon SpenceNFno factor TF: 66-67
2015-06-21VictordeHollanderNFno factor TF: 65-66
2013-11-21David CampeauNFno factor TF: 64-65
2013-10-28NesowaNFno factor TF: 63-64
2012-08-16NesowaNF-PM1B1=90000, B2=1642500, E=6
2002-08-24-anonymous-NF-PM1B1=35000, B2=271250
2002-04-07Team Prime RibC-LLF3BC3DB57773B201
2002-03-24Team Prime RibNF-PM1B1=40000, B2=520000
1999-06-26-anonymous-C-LLF3BC3DB57773B201
1998-07-29SmegheadsNFno factor TF: 1-63
1998-07-29-anonymous-NFno factor TF: 1-62