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
2064389Factored
FactorDigitsBitsDate
47068069211032.1old
73782009852969455720172272.62019-07-28 08:12:08
81429395822028174207832272.82021-10-06 03:36:13
ECM
DigitsB1Curves
255000068 / 280
Estimated T-Level: 21.2
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-06Oliver Kruse14F25098C845CF761013
Verified (Factored)2017-11-16kkmrkkblmbrbk14F25098C845CF76144701213
Verified (Factored)2019-08-01Brett Walker67DB20A7E5CAF63A282149653
Verified (Factored)2019-08-02kkmrkkblmbrbk67DB20A7E5CAF63A2136027353
Verified2021-10-07SRJ287767DB20A7E5CAF63A363981153
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2024-03-29JackBlockfactor ECM small0.00 % 2024-03-29
History
DateUserTypeResult
2021-10-07James HeinrichCERT
PRP Certification
Proof certified good
2021-10-07SRJ2877C-PRP
M2064389/4706806921/7378200985296945572017/8142939582202817420783 : 67DB20A7E5CAF63A
PRP proof power = 7
PRP: Verified
Proof certified good
2021-10-06Dylan DelgadoF-ECM
Factor: 8142939582202817420783 / (ECM curve 4, B1=50000, B2=6750000, Sigma=4399072045508886)
2019-08-02kkmrkkblmbrbkC-PRP
M2064389/4706806921/7378200985296945572017 : 67DB20A7E5CAF63A
PRP: Verified (Factored)
PRP without proof (not generated)
2019-08-01Brett WalkerC-PRP
M2064389/4706806921/7378200985296945572017 : 67DB20A7E5CAF63A
PRP: Verified (Factored)
PRP without proof (not generated)
2019-07-28ATHF-ECM
Factor: 7378200985296945572017 / (ECM curve 1, B1=50000, B2=5000000, Sigma=2045201704482600)
2017-11-16kkmrkkblmbrbkC-PRP
M2064389/4706806921 : 14F25098C845CF76
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-06Oliver KruseC-PRP
M2064389/4706806921 : 14F25098C845CF76
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12