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
8000357Factored
FactorDigitsBitsDate
194711692012682965838778023692994.02018-02-10 11:15:58
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)Martin Fahlgren657D251CE7AD0F1D3391163
Verified (Factored)1999-11-17Roger Carew-Hunt657D251CE7AD0F1D119579
Verified (Factored)2015-09-18Vteam657D251CE7AD0F1D1144593
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-07-04Dt1249FA72B35DB05D891561598253
Verified2019-06-21timbit49FA72B35DB05D891451347753
P-1 factors
DateFactorB1B2
2018-02-101947116920126829658387780236924000000
History
DateUserTypeResult
2019-06-21timbitC-PRP
M8000357/19471169201268296583877802369 : 49FA72B35DB05D89
PRP: Verified
PRP without proof (not generated)
2018-07-04Dt12C-PRP
M8000357/19471169201268296583877802369 : 49FA72B35DB05D89
PRP: Verified
PRP without proof (not generated)
2018-02-10mikrF-PM1
Factor: 19471169201268296583877802369 / (P-1, B1=2400000)
2017-05-12YxinityNF
no factor from 2^69 to 2^70
2017-05-12YxinityNF
no factor from 2^68 to 2^69
2016-11-04ConductorNF
no factor from 2^67 to 2^68
2015-11-13snme2pm1NF
no factor from 2^66 to 2^67
2015-09-18VteamC-LL
657D251CE7AD0F1D
2015-04-20snme2pm1NF
no factor from 2^65 to 2^66
2013-09-01David CampeauNF
no factor from 2^64 to 2^65
2013-07-24c10ck3rNF
no factor from 2^63 to 2^64
2012-04-07Squeeky_SquirrelNF-PM1
B1=100000, B2=1950000, E=6