Marin Mersenne 2^P-1
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MnStatusDetails
7939039Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
34971171965351340519532271.62023-06-13 14:59:49
379733950886684934641735985437659123887140131.52023-06-13 14:59:49
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-08-31Claus Flensburg6377DF23F2EDF76A6081411
Verified (Factored)2002-06-23Mark Slatter6377DF23F2EDF76A3467559
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-06-16Naegi Makoto0A2737C02EB61C5F2275451053
P-1 factors
DateFactorB1B2
2023-06-131327974129754053900171864220196556462405177701616503834706506330000008070112050
History
DateUserTypeResult
2023-06-16LOBESCERT
PRP Certification
Proof certified good
2023-06-16Naegi MakotoC-PRP
M7939039/3497117196535134051953/3797339508866849346417359854376591238871 : 0A2737C02EB61C5F
PRP proof power = 8
PRP: Verified
Proof certified good
2023-06-13ThaF-PM1
Factors: 3497117196535134051953,3797339508866849346417359854376591238871 / (P-1, B1=3000000, B2=8070112050)
2021-12-04mikrNF
no factor from 2^70 to 2^71
2020-09-26-Anonymous-NF
no factor from 2^69 to 2^70
2020-02-07TJAOINF
no factor from 2^68 to 2^69
2018-07-24ramgeisNF
no factor from 2^67 to 2^68
2016-10-08Squeeky_SquirrelNF-PM1
B1=245000, B2=6308750, E=12
2016-08-17Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-03VictordeHollanderNF
no factor from 2^65 to 2^66
2014-01-04David CampeauNF
no factor from 2^64 to 2^65
2013-10-02NesowaNF
no factor from 2^63 to 2^64
2012-09-06Squeeky_SquirrelNF-PM1
B1=100000, B2=1900000, E=6