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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
18984337Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
29405684932870749505512271.32021-10-08 19:14:36
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)2004-01-27Jan Helmet25D0247357F9D0074496472
Verified (Factored)2007-09-28TheJudger25D0247357F9D00715244983
History
DateUserTypeResult
2025-06-17GregF
Factor: 2940568493287074950551 / TF: 71-72
2021-10-08-Anonymous-F
Factor: 2940568493287074950551 / TF: 71-72
2021-09-12SRBaseNF
no factor from 2^70 to 2^71
2020-01-14lycornNF
no factor from 2^69 to 2^70
2017-09-22ramgeisNF
no factor from 2^68 to 2^69
2017-09-22ramgeisNF
no factor from 2^67 to 2^68
2014-07-29NesowaNF
no factor from 2^66 to 2^67