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
7997153Factored
FactorDigitsBitsDate
1525676845823685655912167.02017-01-09 16:34:31
ECM
DigitsB1Curves
25500003 / 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)1999-09-22Chip HillEA3B6DE27A6FFD546182581
Verified (Factored)2002-11-02Radu MuscheviciEA3B6DE27A6FFD542538088
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-07-07Oliver KruseB861253DB997A8231426148553
Verified2019-12-24ATHB861253DB997A8231439722853
History
DateUserTypeResult
2019-12-24ATHC-PRP
M7997153/152567684582368565591 : B861253DB997A823
PRP: Verified
PRP without proof (not generated)
2018-07-07Oliver KruseC-PRP
M7997153/152567684582368565591 : B861253DB997A823
PRP: Verified
PRP without proof (not generated)
2017-01-09ConductorF
Factor: 152567684582368565591 / TF: 67-68
2016-08-22Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-09VictordeHollanderNF
no factor from 2^65 to 2^66
2013-12-23David CampeauNF
no factor from 2^64 to 2^65
2013-09-19NesowaNF
no factor from 2^63 to 2^64
2012-07-30Squeeky_SquirrelNF-PM1
B1=100000, B2=1950000, E=6