Marin Mersenne 2^P-1
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MnStatusDetails
2742653Factored
FactorDigitsBitsDate
2876941029621408281207532477.92021-09-29 18:52:51
ECM
DigitsB1Curves
2550000114 / 280
Estimated T-Level: 22.0
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Gordon M. Spence854B8A2D1C6033C30
Verified (Factored)1998-04-11Jeff Shute854B8A2D1C6033C30
Verified (Factored)1999-07-27arnaud854B8A2D1C6033C31143336
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-10-09Peter_Jakub03DA5019CC09E70C159164653
History
DateUserTypeResult
2021-10-09curtiscCERT
PRP Certification
Proof certified good
2021-10-09Peter_JakubC-PRP
M2742653/287694102962140828120753 : 03DA5019CC09E70C
PRP proof power = 7
PRP: Verified
Proof certified good
2021-09-29daveward2005F-ECM
Factor: 287694102962140828120753 / (ECM curve 5, B1=50000, B2=5000000, Sigma=6540684017948000)
2021-07-08TJAOINF
no factor from 2^68 to 2^69
2019-02-18chuenkitNF
no factor from 2^67 to 2^68
2017-10-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-11-08mikrNF-PM1
B1=2700000, B2=84000000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2016-02-03ramgeisNF
no factor from 2^65 to 2^66
2015-04-21VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-21VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-04-06markrNF
no factor from 2^61 to 2^62
2011-04-29James HeinrichNF-PM1
B1=185000, B2=4625000, E=6
2011-01-21JossNF-PM1
B1=50000
2010-12-29JossNF-PM1
B1=30000
2010-12-21JossNF-PM1
B1=20000
2009-01-30Sturle SundeNF
no factor from 2^60 to 2^61