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
18692467Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
10278680698119395689432269.82020-02-13 21:09:06
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)2003-05-26Tosh MestonCA1CF78753DA1D458638208
Verified (Factored)2007-02-20Stephen WhiteCA1CF78753DA1D45352180
History
DateUserTypeResult
2025-06-15GregF
Factor: 1027868069811939568943 / TF: 69-70
2020-02-13lycornF
Factor: 1027868069811939568943 / TF: 69-70*
2018-01-29ramgeisNF
no factor from 2^68 to 2^69
2018-01-29ramgeisNF
no factor from 2^67 to 2^68
2016-03-27Mark RoseNF
no factor from 2^66 to 2^67