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
3963013
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 271
TF target 265
Factored
FactorDigitsBitsDate
2732347441356431007046656694333097.82025-02-22 18:27:28
ECM
DigitsB1Curves
2550000100 / 280
Estimated T-Level: 21.8
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredAlbrecht HeefferCE31B8372D2F0C970Windows,Prime95,v14,(aka WQ1)
Factored1999-10-21Grant MilneCE31B8372D2F0C972856999Windows,Prime95,v18,(aka WU1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
Certified Good
2025-02-22fordobr503152953CC5C1261239866153
History
DateUserTypeResult
2025-02-22JBCERT
Proof certified good
2025-02-22fordobrC-PRPM3963013/273234744135643100704665669433 : 503152953CC5C126
Proof Certified Good

Proof Power: 7

2025-02-22fordobrF-ECMFactor: 273234744135643100704665669433 / ECM curve 1, B1=97194, B2=88280115, Edwards Sigma=412569213923087
2025-02-20JossNF-PM1B1=10369870, B2=20376886530
2025-02-19JossNF-PM1B1=10369870, B2=10206085890
2023-06-23Sid & AndyNF-PM1B1=5100000, B2=15672777120
2022-10-13JossNF-PM1B1=1000000, B2=1017901500
2022-10-02JossNF-PM1B1=1000000, B2=113097600
2022-04-29JossNF-PM1B1=500000, B2=113097600
2021-11-20Aaron HavilandNF-PM1B1=410000, B2=12300000, E=12
2021-06-03-anonymous-NFno factor TF: 70-71
2021-05-07axnNFno factor TF: 69-70
2020-05-22TJAOINFno factor TF: 68-69
2018-12-29YxinityNFno factor TF: 67-68
2016-12-15Gordon SpenceNFno factor TF: 66-67
2016-10-16Squeeky_SquirrelNF-PM1B1=245000, B2=6860000, E=12
2016-02-23Mark RoseNFno factor TF: 62-63
2016-02-11ramgeisNFno factor TF: 65-66
2015-08-30Squeeky_SquirrelNF-PM1B1=185000, B2=4763750, E=6
2014-11-19JossNF-PM1B1=86196
2013-10-07David CampeauNFno factor TF: 64-65
2013-06-24JayderNFno factor TF: 63-64
2012-02-20GrunwalderGIMPNFno factor TF: 1-63
2011-09-14Squeeky_SquirrelNF-PM1B1=70000, B2=1190000, E=6
2011-04-04Grant McCrackenNFno factor TF: 61-62
2009-07-24Carsten KossendeyNF-PM1B1=20000, B2=285000
2001-08-12-anonymous-NFno factor TF: 1-61
1999-10-21-anonymous-C-LLCE31B8372D2F0C97