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
4477199Factored
FactorDigitsBitsDate
22402552173297961228792270.92019-11-15 07:49:44
ECM
DigitsB1Curves
255000012 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-04-05Bill Doyle21633647BC0DD2100
Verified (Factored)2001-04-08C. B. Pedersen21633647BC0DD210555345
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-11-16trebor12D972B53733D8F4119921853
Verified2019-11-18arnaud12D972B53733D8F41267628953
History
DateUserTypeResult
2023-04-17Kevin_9611NF-PM1
B1=350000, B2=234860340
2019-11-18arnaudC-PRP
M4477199/2240255217329796122879 : 12D972B53733D8F4
PRP: Verified
PRP without proof (not generated)
2019-11-16treborC-PRP
M4477199/2240255217329796122879 : 12D972B53733D8F4
PRP: Verified
PRP without proof (not generated)
2019-11-15mnd9F-ECM
Factor: 2240255217329796122879 / (ECM curve 3, B1=50000, B2=5000000, Sigma=7935199143446892)
2018-06-24ramgeisNF
no factor from 2^67 to 2^68
2018-06-24ramgeisNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-26snme2pm1NF
no factor from 2^65 to 2^66
2014-09-20monstNF
no factor from 2^64 to 2^65
2014-09-19JayderNF
no factor from 2^63 to 2^64
2012-10-24Squeeky_SquirrelNF-PM1
B1=290000, B2=7540000, E=12
2012-02-29GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-10-04markrNF
no factor from 2^61 to 2^62
2009-07-24Carsten KossendeyNF-PM1
B1=25000, B2=362500