Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1939787Factored
FactorDigitsBitsDate
21419773330660814317468084492890.82020-01-08 13:26:42
ECM
DigitsB1Curves
2550000272 / 280
Estimated T-Level: 24.9
TF below 2^78 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ekim Sahin788B45970C947B680
Verified (Factored)1999-01-10Kev Thomas788B45970C947B68149763
Verified (Factored)2015-06-27MadPoo788B45970C947B68912620
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-01-08mrhCC29EDEC95775518129355753
Verified2020-01-09marssystemsCC29EDEC957755181158553053
History
DateUserTypeResult
2020-01-09marssystemsC-PRP
M1939787/2141977333066081431746808449 : CC29EDEC95775518
PRP: Verified
PRP without proof (not generated)
2020-01-08mrhC-PRP
M1939787/2141977333066081431746808449 : CC29EDEC95775518
PRP: Verified
PRP without proof (not generated)
2020-01-08KeysarecoolF-ECM
Factor: 2141977333066081431746808449 / (ECM curve 3, B1=50000, B2=5000000, Sigma=686150873592049)
2019-05-10chuenkitNF
no factor from 2^67 to 2^68
2018-02-04mikrNF-PM1
B1=8000000, B2=320000000, E=12
2018-02-04JossNF-PM1
B1=1939787, B2=28312160, E=12
2017-12-04TJAOINF
no factor from 2^66 to 2^67
2017-04-12JossNF-PM1
B1=1415608, B2=14156080, E=12
2017-01-22JossNF-PM1
B1=1179674
2017-01-04JossNF-PM1
B1=983062
2016-12-24JossNF-PM1
B1=819219
2016-12-17JossNF-PM1
B1=682683
2016-12-15JossNF-PM1
B1=568903
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-08Bruno VictalNF-PM1
B1=500000, B2=15000000, E=12
2015-09-05ramgeisNF
no factor from 2^65 to 2^66
2015-06-27MadPooC-LL
788B45970C947B68
2015-05-07lycornNF
no factor from 2^64 to 2^65
2015-05-07lycornNF
no factor from 2^63 to 2^64
2012-01-28markrNF-PM1
B1=275000, B2=6000000, E=12
2011-08-27GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-01-29S485122NF
no factor from 2^60 to 2^61