Marin Mersenne 2^P-1
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MnStatusDetails
11218483Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1956660387601092878081212477.42024-10-12 15:07:31
ECM
DigitsB1Curves
25500003 / 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)2000-11-25Jean Marie RAULINF72E55A009DACCB99485131
Verified (Factored)2004-02-23Ernest WagnerF72E55A009DACCB96113333
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-10-12vshC55013F623C21BC3141657353
P-1 factors
DateFactorB1B2
2024-10-121956660387601092878081211000000020000264130
History
DateUserTypeResult
2025-02-05James HeinrichNF
no factor from 2^72 to 2^73
2024-10-12Luke DurantCERT
PRP Certification
Proof certified good
2024-10-12vshC-PRP
M11218483/195666038760109287808121 : C55013F623C21BC3
PRP proof power = 8
PRP: Verified
Proof certified good
2024-10-12vshF-PM1
Factor: 195666038760109287808121 / (P-1, B1=10000000, B2=20000264130)
2024-06-22vshNF
no factor from 2^72 to 2^73
2021-12-28LaurVNF-PM1
B1=6189107, B2=185673210
2021-10-30SRBaseNF
no factor from 2^71 to 2^72
2021-08-14SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2017-12-27ramgeisNF
no factor from 2^68 to 2^69
2017-12-27ramgeisNF
no factor from 2^67 to 2^68
2016-02-13YxinityNF
no factor from 2^66 to 2^67
2015-03-14NumberwangNF
no factor from 2^65 to 2^66
2013-11-23lycornNF
no factor from 2^64 to 2^65
2012-05-14James HeinrichNF-PM1
B1=215000, B2=5160000, E=6