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
2543621Factored
FactorDigitsBitsDate
1200097123970048043832166.72010-04-30 15:01:22
ECM
DigitsB1Curves
255000060 / 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)Thomas Honold8F9A6B4B218149550
Verified (Factored)1999-05-30Brian Mowrey8F9A6B4B218149551950661
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-14Oliver KruseF988AD365C71A8A91136698653
Verified2017-12-01storm5510F988AD365C71A8A9141564853
History
DateUserTypeResult
2023-01-25USAFSSNF-PM1
B1=223000, B2=238697550
2022-03-11LordJuliusNF
no factor from 2^1 to 2^60
2017-12-01storm5510C-PRP
M2543621/120009712397004804383 : F988AD365C71A8A9
PRP: Verified
PRP without proof (not generated)
2017-10-14Oliver KruseC-PRP
M2543621/120009712397004804383 : F988AD365C71A8A9
PRP: Verified
PRP without proof (not generated)
2010-04-30SubPrimeF-ECM
Factor: 120009712397004804383
2009-01-31Sturle SundeNF
no factor from 2^60 to 2^61