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
12463357Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
18445311647258045927083512580.62024-07-17 22:02:55
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2001-09-16Mitch ArmisteadC48B8A3E3BF237748867116
Verified (Factored)2004-07-13Gord PalametaC48B8A3E3BF237741446182
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-07-23Luke Durant75DFEC608A808E081834930653
P-1 factors
DateFactorB1B2
2024-07-17184453116472580459270835120000006127810920
History
DateUserTypeResult
2024-07-23William WallaceCERT
PRP Certification
Proof certified good
2024-07-23Luke DurantC-PRP
M12463357/1844531164725804592708351 : 75DFEC608A808E08
PRP proof power = 8
PRP: Verified
Proof certified good
2024-07-17ThaF-PM1
Factor: 1844531164725804592708351 / (P-1, B1=2000000, B2=6127810920)
2021-10-29-Anonymous-NF
no factor from 2^71 to 2^72
2021-08-15SRBaseNF
no factor from 2^70 to 2^71
2021-08-07SRBaseNF
no factor from 2^69 to 2^70
2017-11-14ramgeisNF
no factor from 2^68 to 2^69
2015-11-08ThaNF-PM1
B1=300000, B2=6000000, E=12
2015-08-14ThaNF
no factor from 2^67 to 2^68
2015-03-18ThaNF
no factor from 2^66 to 2^67
2014-03-03NesowaNF
no factor from 2^65 to 2^66
2013-06-30lycornNF
no factor from 2^64 to 2^65