Marin Mersenne 2^P-1
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MnStatusDetails
2495551Factored
FactorDigitsBitsDate
779457939233459837394712376.02021-04-13 08:15:57
ECM
DigitsB1Curves
2550000117 / 280
Estimated T-Level: 22.1
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Martin Buck99EDEB450B6AEB230
Verified (Factored)1999-06-15Hgin normaalilyseo99EDEB450B6AEB231568937
Verified (Factored)2018-06-01kkmrkkblmbrbk99EDEB450B6AEB232124761
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-04-20Nesowa8F7FFDB1F9392A26132535753
Verified2021-04-21XZT8F7FFDB1F9392A2617499753
History
DateUserTypeResult
2021-04-21curtiscCERT
PRP Certification
Proof certified good
2021-04-21XZTC-PRP
M2495551/77945793923345983739471 : 8F7FFDB1F9392A26
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-20NesowaC-PRP
M2495551/77945793923345983739471 : 8F7FFDB1F9392A26
PRP: Verified
PRP without proof (not generated)
2021-04-13mnd9F-ECM
Factor: 77945793923345983739471 / (ECM curve 2, B1=50000, B2=5000000, Sigma=7711226433189605)
2019-03-25TJAOINF
no factor from 2^67 to 2^68
2018-06-01kkmrkkblmbrbkC-LL
99EDEB450B6AEB23
2017-07-24Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-31ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-12-08mikrNF-PM1
B1=2382500, B2=85770100, E=12
2014-09-10JossNF-PM1
B1=120719
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-06-11Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-25Oscar ÖstlinNF-PM1
B1=95000, B2=1971250, E=6
2010-12-22JossNF-PM1
B1=20000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61