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
7214269
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 269
TF target 267
Factored
FactorDigitsBitsDate
4201338380272090117432168.52020-04-17 08:26:28
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
Factored1999-09-22Per M. Hansen3F6910CBF716F7893551223Windows,Prime95,v18,(aka WU1)
Factored2002-01-08Victor Lembryk3F6910CBF716F7896025731Windows,Prime95,v20,(aka WW1)
Factored2003-05-04Phillip Reed3F6910CBF716F7893844876Windows,Prime95,v18,(aka WU1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2020-04-19xyuzyzA1847A7CDC6A3F0C193841253
Verified
PRP without proof (not generated)
2020-04-19Igvan28A1847A7CDC6A3F0C1267999853
History
DateUserTypeResult
2025-10-05Sid & AndyNF-PM1B1=2600000, B2=4263252840
2020-04-19Igvan28C-PRPM7214269/420133838027209011743 : A1847A7CDC6A3F0C
2020-04-19xyuzyzC-PRPM7214269/420133838027209011743 : A1847A7CDC6A3F0C
2020-04-17TJAOIFFactor: 420133838027209011743 / TF: 68-69
2018-07-22ramgeisNFno factor TF: 67-68
2016-10-13Gordon SpenceNFno factor TF: 66-67
2016-07-11Squeeky_SquirrelNF-PM1B1=180000, B2=4140000, E=6
2015-06-16VictordeHollanderNFno factor TF: 65-66
2013-11-14David CampeauNFno factor TF: 64-65
2012-08-06Squeeky_SquirrelNF-PM1B1=80000, B2=1320000, E=6
2012-03-12David CampeauNFno factor TF: 63-64
2003-05-04-anonymous-C-LL3F6910CBF716F789
2002-01-08-anonymous-C-LL3F6910CBF716F789
2001-12-01-anonymous-NF-PM1B1=35000, B2=358750
2001-12-01-anonymous-NFno factor TF: 1-63
1999-09-22-anonymous-C-LL3F6910CBF716F789
1998-06-14-anonymous-NFno factor TF: 1-62