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

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Exponent Range:










MnStatusDetails
2924777Factored
FactorDigitsBitsDate
7720775201781647386072169.42021-03-05 01:34:46
ECM
DigitsB1Curves
255000076 / 280
Estimated T-Level: 21.4 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Joel Armengaud26A33538A10C110F0
Verified (Factored)1999-05-30Alex_Alaniz26A33538A10C110F1563364
Verified (Factored)2018-10-05kkmrkkblmbrbk26A33538A10C110F2647668
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-03-08Klaus Nordmann2119FF3541BBF3531430053
Verified2021-03-15Anton Repko2119FF3541BBF3531100231653
History
DateUserTypeResult
2021-03-15Steve JacobsonCERT
PRP Certification
Proof certified good
2021-03-15Anton RepkoC-PRP
M2924777/772077520178164738607 : 2119FF3541BBF353
PRP proof power = 7
PRP: Verified
Proof certified good
2021-03-08Klaus NordmannC-PRP
M2924777/772077520178164738607 : 2119FF3541BBF353
PRP proof power = 7
PRP: Verified
PRP proof never uploaded
2021-03-05MarkSF-ECM
Factor: 772077520178164738607 / (ECM curve 16, B1=50000, B2=5000000, Sigma=5078573650622756)
2018-12-20chuenkitNF
no factor from 2^67 to 2^68
2018-10-05kkmrkkblmbrbkC-LL
26A33538A10C110F
2017-11-22Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-23ramgeisNF
no factor from 2^65 to 2^66
2015-04-27VictordeHollanderNF-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
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2012-01-09Grant McCrackenNF
no factor from 2^61 to 2^62
2010-11-13markrNF-PM1
B1=105000, B2=2283750, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61