Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
2916931Factored
FactorDigitsBitsDate
2278583380734609474171094632787.62021-04-02 12:03:23
ECM
DigitsB1Curves
255000068 / 280
Estimated T-Level: 21.2 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Jeff Woods231AEC1C4F3184C10
Verified (Factored)1999-05-16Robin Gomi231AEC1C4F3184C11074748
Verified (Factored)2018-10-04kkmrkkblmbrbk231AEC1C4F3184C1240653
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-04-03Kirill Frolov378C6E42F5695CDD1184755353
Verified2021-04-04daveward2005378C6E42F5695CDD1197773053
History
DateUserTypeResult
2021-04-04Simon JosefssonCERT
PRP Certification
Proof certified good
2021-04-04daveward2005C-PRP
M2916931/227858338073460947417109463 : 378C6E42F5695CDD
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-03ky0urakuCERT
PRP Certification
Proof certified good
2021-04-03Kirill FrolovC-PRP
M2916931/227858338073460947417109463 : 378C6E42F5695CDD
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-02ZenzomaF-ECM
Factor: 227858338073460947417109463 / (ECM curve 1, B1=50000, B2=5000000, Sigma=2307852215159787)
2020-04-01masserNF-PM1
B1=5000000, B2=200000000, E=12
2018-12-18chuenkitNF
no factor from 2^67 to 2^68
2018-10-04kkmrkkblmbrbkC-LL
231AEC1C4F3184C1
2017-11-19Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-17YxinityNF
no factor from 2^65 to 2^66
2015-04-25VictordeHollanderNF-PM1
B1=1000000, B2=20000000, E=12
2015-04-25VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-25VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-10dbaughNF
no factor from 2^62 to 2^63
2011-12-22Grant McCrackenNF
no factor from 2^61 to 2^62
2010-11-15markrNF-PM1
B1=105000, B2=2283750, E=6
2010-11-13JossNF-PM1
B1=15000
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61