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
2799197Factored
FactorDigitsBitsDate
487648120733371796442172375.42018-01-28 01:38:25
ECM
DigitsB1Curves
255000026 / 280
Estimated T-Level: 20.5 ⓘ
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Steven ReasonerC846E9423518A4340
Verified (Factored)1999-05-23adam goodliss and christian dambolenaC846E9423518A4342358578
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-01-29AdolfNorEB08D014238028C91218764253
Verified2018-01-31Oliver KruseEB08D014238028C91124221253
History
DateUserTypeResult
2023-04-17Kevin_9611NF-PM1
B1=480000, B2=616387590
2018-01-31Oliver KruseC-PRP
M2799197/48764812073337179644217 : EB08D014238028C9
PRP: Verified
PRP without proof (not generated)
2018-01-29AdolfNorC-PRP
M2799197/48764812073337179644217 : EB08D014238028C9
PRP: Verified
PRP without proof (not generated)
2018-01-28Chang Chia-TcheF-ECM
Factor: 48764812073337179644217 / (ECM curve 2, B1=50000, B2=5000000)
2017-10-20Gordon SpenceNF
no factor from 2^66 to 2^67
2017-07-30JossNF-PM1
B1=400000, B2=4000000, E=6
2016-05-08JossNF-PM1
B1=200000, B2=3600000, E=6
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-10ramgeisNF
no factor from 2^65 to 2^66
2015-04-21VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-21VictordeHollanderNF
no factor from 2^63 to 2^64
2014-11-06JossNF-PM1
B1=122930
2013-01-10dbaughNF
no factor from 2^62 to 2^63
2012-03-05Grant McCrackenNF
no factor from 2^61 to 2^62
2010-11-21markrNF-PM1
B1=100000, B2=2075000, E=6
2010-11-12JossNF-PM1
B1=15000
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61