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
2418781Factored
FactorDigitsBitsDate
44361962970295466769592632581.92020-07-14 08:43:56
ECM
DigitsB1Curves
255000063 / 280
Estimated T-Level: 21.1 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-02-08Matthias MüllerA363B3279070918E0
Verified (Factored)1999-04-13MFS SoftwareA363B3279070918E2213068
Verified (Factored)2018-05-19kkmrkkblmbrbkA363B3279070918E771894
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-07-14M MillerDF2BD6250CE7493A1218804953
Verified2020-07-14oodairaDF2BD6250CE7493A1238315853
History
DateUserTypeResult
2020-07-14oodairaC-PRP
M2418781/4436196297029546676959263 : DF2BD6250CE7493A
PRP: Verified
PRP without proof (not generated)
2020-07-14M MillerC-PRP
M2418781/4436196297029546676959263 : DF2BD6250CE7493A
PRP: Verified
PRP without proof (not generated)
2020-07-14GANF-ECM
Factor: 4436196297029546676959263 / (ECM curve 3, B1=50000, B2=5000000, Sigma=899719111073524)
2019-04-20Anton RepkoNF
no factor from 2^69 to 2^70
2019-04-03Anton RepkoNF
no factor from 2^67 to 2^69
2018-05-19kkmrkkblmbrbkC-LL
A363B3279070918E
2017-07-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-22ramgeisNF
no factor from 2^65 to 2^66
2015-02-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-27VictordeHollanderNF
no factor from 2^63 to 2^64
2014-04-04mikrNF-PM1
B1=3102822, B2=43439508, E=12
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-06-04Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-12-18markrNF-PM1
B1=95000, B2=1923750, E=6
2010-11-16JossNF-PM1
B1=20000
2010-11-09JossNF-PM1
B1=15000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61