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
2478937Factored
FactorDigitsBitsDate
1775081752183459985392072477.22020-12-13 11:57:12
ECM
DigitsB1Curves
255000091 / 280
Estimated T-Level: 21.6
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)John Hocking402326B232982DF90
Verified (Factored)1999-08-16John Hartman402326B232982DF92142794
Verified (Factored)2018-05-30kkmrkkblmbrbk402326B232982DF91774317
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-12-14Jayder3767614C76C604041107005153
History
DateUserTypeResult
2020-12-14Ben DeloCERT
PRP Certification
Proof certified good
2020-12-14JayderC-PRP
M2478937/177508175218345998539207 : 3767614C76C60404
PRP proof power = 7
PRP: Verified
Proof certified good
2020-12-13ZenzomaF-ECM
Factor: 177508175218345998539207 / (ECM curve 1, B1=50000, B2=5000000, Sigma=6880640393632798)
2019-05-27TJAOINF
no factor from 2^67 to 2^68
2018-05-30kkmrkkblmbrbkC-LL
402326B232982DF9
2017-07-22Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-29ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-27mikrNF-PM1
B1=2382500, B2=85770100, E=12
2014-09-02JossNF-PM1
B1=120892
2013-08-21David CampeauNF
no factor from 2^62 to 2^63
2012-06-09Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-20Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-11-20JossNF-PM1
B1=20000
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61