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

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Exponent Range:










MnStatusDetails
2011957Factored
FactorDigitsBitsDate
29958191683748843795992271.32017-10-30 20:04:51
670878798466961190846866872685.82023-06-12 09:38:07
ECM
DigitsB1Curves
2550000280 / 280
30250000113 / 640
Estimated T-Level: 25.9
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Dwayne Towell4EB6FBA02B5BC5F80
Verified (Factored)1999-01-10Peter Maddux4EB6FBA02B5BC5F8123502
Verified (Factored)2016-06-21Mark Rose4EB6FBA02B5BC5F81503011
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-31Yaroslav Berezhko060AB4439DF475811199599553
Verified (Factored)2017-10-31Oliver Kruse060AB4439DF47581148922653
Verified (Factored)2017-11-01Yaroslav Berezhko060AB4439DF47581190366653
Verified2023-06-12Naegi Makoto060AB4439DF47581211107053
History
DateUserTypeResult
2023-06-12curtiscCERT
PRP Certification
Proof certified good
2023-06-12Naegi MakotoC-PRP
M2011957/2995819168374884379599/67087879846696119084686687 : 060AB4439DF47581
PRP proof power = 7
PRP: Verified
Proof certified good
2023-06-12TJAOIF-ECM
Factor: 67087879846696119084686687 / (ECM curve 38, B1=250000, B2=40000000, Sigma=1534560001523661)
2017-11-01Yaroslav BerezhkoC-PRP
M2011957/2995819168374884379599 : 060AB4439DF47581
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-31Oliver KruseC-PRP
M2011957/2995819168374884379599 : 060AB4439DF47581
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-31Yaroslav BerezhkoC-PRP
M2011957/2995819168374884379599 : 060AB4439DF47581
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-30Sid & AndyF-ECM
Factor: 2995819168374884379599 / (ECM curve 45, B1=50000, B2=5000000)
2016-07-16Gordon SpenceNF
no factor from 2^66 to 2^67
2016-06-21Mark RoseC-LL
4EB6FBA02B5BC5F8
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-29ramgeisNF
no factor from 2^65 to 2^66
2015-03-15VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-15VictordeHollanderNF
no factor from 2^63 to 2^64
2013-10-09David CampeauNF-PM1
B1=580000, B2=15080000, E=12
2013-02-11dbaughNF
no factor from 2^62 to 2^63
2012-01-31Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-12-02JossNF-PM1
B1=201195
2009-01-05Sturle SundeNF
no factor from 2^60 to 2^61