Marin Mersenne 2^P-1
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MnStatusDetails
17965711Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
3080619132677530655386572478.02022-02-16 16:50:54
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2003-03-07CJB3AE29DA24BC20696656461
Verified (Factored)2006-10-24TobiasB3AE29DA24BC20694167094
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2025-04-24Perig893C3267BF61AE321538032053
P-1 factors
DateFactorB1B2
2022-02-1630806191326775306553865710000001000000
History
DateUserTypeResult
2025-04-24SciHackerCERT
PRP Certification
Proof certified good
2025-04-24PerigC-PRP
M17965711/308061913267753065538657 : 893C3267BF61AE32
PRP proof power = 8
PRP: Verified
Proof certified good
2022-02-16masserF-PM1
Factor: 308061913267753065538657 / (P-1, B1=1000000)
2022-01-11TheJudgerNF
no factor from 2^73 to 2^74
2021-12-20ZacHFXNF
no factor from 2^72 to 2^73
2021-09-23-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-10SRBaseNF
no factor from 2^70 to 2^71
2020-03-14lycornNF
no factor from 2^69 to 2^70
2018-03-14ramgeisNF
no factor from 2^68 to 2^69
2018-03-14ramgeisNF
no factor from 2^67 to 2^68
2014-08-19NesowaNF
no factor from 2^66 to 2^67