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
2844421Factored
FactorDigitsBitsDate
1211452064240154892632166.72010-11-10 00:57:26
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Guido Bresadola7FE7A1D513EEB08D0
Verified (Factored)1999-05-16Tristan Fillmore7FE7A1D513EEB08D1267156
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-22Oliver KruseD739A47263BC4EC8115742153
Verified2017-12-07Chang Chia-TcheD739A47263BC4EC81155166553
History
DateUserTypeResult
2023-01-31USAFSSNF-PM1
B1=360000, B2=287380170
2017-12-07Chang Chia-TcheC-PRP
M2844421/121145206424015489263 : D739A47263BC4EC8
PRP: Verified
PRP without proof (not generated)
2017-10-22Oliver KruseC-PRP
M2844421/121145206424015489263 : D739A47263BC4EC8
PRP: Verified
PRP without proof (not generated)
2010-11-10Chang Chia-TcheF-ECM
Factor: 121145206424015489263
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61
2008-10-31Jayson KingNF-PM1
B1=35000, B2=560000