Marin Mersenne 2^P-1
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MnStatusDetails
7961069Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
9395423380915049662127930665723456776664982265747156.02023-07-05 08:20:33
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)2002-06-29Ars Technica Team Prime Rib5E3C752315985C134012476
Verified (Factored)2002-09-14Binary Digits5E3C752315985C13152278
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-07-05Naegi MakotoD05B4DAECB55814A1486291053
P-1 factors
DateFactorB1B2
2023-07-059395423380915049662127930665723456776664982265730000008070112050
History
DateUserTypeResult
2023-08-10riccardo ubertiNF
no factor from 2^71 to 2^72
2023-07-05REDCERT
PRP Certification
Proof certified good
2023-07-05Naegi MakotoC-PRP
M7961069/93954233809150496621279306657234567766649822657 : D05B4DAECB55814A
PRP proof power = 8
PRP: Verified
Proof certified good
2023-07-05ThaF-PM1
Factor: 93954233809150496621279306657234567766649822657 / (P-1, B1=3000000, B2=8070112050)
2021-12-08mikrNF
no factor from 2^70 to 2^71
2020-09-27-Anonymous-NF
no factor from 2^69 to 2^70
2020-08-24storm5510NF-PM1
B1=290000, B2=5872500, E=6
2020-03-06TJAOINF
no factor from 2^68 to 2^69
2018-07-24ramgeisNF
no factor from 2^67 to 2^68
2016-08-20Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-03VictordeHollanderNF
no factor from 2^65 to 2^66
2013-12-22David CampeauNF
no factor from 2^64 to 2^65
2013-10-02NesowaNF
no factor from 2^63 to 2^64
2012-08-23Squeeky_SquirrelNF-PM1
B1=100000, B2=1925000, E=6