Marin Mersenne 2^P-1
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MnStatusDetails
6979913Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1750532894822927595691196006063687335113.82023-09-12 01:01:58
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)2000-09-23Werner Durandi/Reto Keiser3A6CA266F392D2193635139
Verified (Factored)2001-12-01Angel Galan Galan3A6CA266F392D219965272
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-09-12Naegi MakotoDB6738E5F3EF40311536929753
P-1 factors
DateFactorB1B2
2023-09-121750532894822927595691196006063687335000009616446840
History
DateUserTypeResult
2023-09-12S00030CERT
PRP Certification
Proof certified good
2023-09-12Naegi MakotoC-PRP
M6979913/17505328948229275956911960060636873 : DB6738E5F3EF4031
PRP proof power = 8
PRP: Verified
Proof certified good
2023-09-12ThaF-PM1
Factor: 17505328948229275956911960060636873 / (P-1, B1=3500000, B2=9616446840)
2021-11-05Seth_TrNF-PM1
B1=2000000, B2=58000000, E=12
2021-09-26SRBaseNF
no factor from 2^71 to 2^72
2021-09-06SRBaseNF
no factor from 2^70 to 2^71
2021-08-09takahashiNF
no factor from 2^69 to 2^70
2020-04-10TJAOINF
no factor from 2^68 to 2^69
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-26Gordon SpenceNF
no factor from 2^66 to 2^67
2015-07-03VictordeHollanderNF
no factor from 2^65 to 2^66
2014-08-17NesowaNF-PM1
B1=435000, B2=11418750, E=12
2014-02-15lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64