Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
17598863Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
115978252661217002678817612683.32024-08-25 01:22:43
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)2003-01-16Marco Negrazus98C4F27C33B827065155352
Verified (Factored)2007-02-05Ing. Pavel PaJaSoft Janousek98C4F27C33B8270611182465
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-12-21mrhD5AC78B9CCCA785411156203853
P-1 factors
DateFactorB1B2
2024-08-251159782526612170026788176110000001396452750
History
DateUserTypeResult
2024-12-22George WoltmanCERT
PRP Certification
Proof certified good
2024-12-21mrhC-PRP
M17598863/11597825266121700267881761 : D5AC78B9CCCA7854
PRP proof power = 8
PRP: Verified
Proof certified good
2024-08-25Jarod McClintockF-PM1
Factor: 11597825266121700267881761 / (P-1, B1=1000000, B2=1396452750)
2022-01-11TheJudgerNF
no factor from 2^73 to 2^74
2021-11-12RichD0NF
no factor from 2^72 to 2^73
2021-09-21-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-10SRBaseNF
no factor from 2^70 to 2^71
2020-04-19lycornNF
no factor from 2^69 to 2^70
2018-03-20ramgeisNF
no factor from 2^68 to 2^69
2018-03-20ramgeisNF
no factor from 2^67 to 2^68
2016-03-18Mark RoseNF
no factor from 2^65 to 2^66
2014-08-30NesowaNF
no factor from 2^66 to 2^67