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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
17998861Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 2000000
B2 = 676712850
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2003-02-24Dr. Martin NowakD503CC2D609B3E9916430807
Verified2007-07-04Fabian RiegerD503CC2D609B3E991113160
History
DateUserTypeResult
2024-10-15masserNF-PM1
B1=2000000, B2=676712850
2022-01-11TheJudgerNF
no factor from 2^73 to 2^74
2021-11-09Dylan DelgadoNF
no factor from 2^72 to 2^73
2021-01-30YxinityNF
no factor from 2^71 to 2^72
2019-08-30YxinityNF
no factor from 2^70 to 2^71
2017-09-27YxinityNF
no factor from 2^69 to 2^70
2017-09-21ramgeisNF
no factor from 2^68 to 2^69
2017-01-23ConductorNF
no factor from 2^67 to 2^68
2014-08-19NesowaNF
no factor from 2^66 to 2^67