Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
584951Factored
FactorDigitsBitsDate
3846264976444261431858.42007-08-21 15:25:30
ECM
DigitsB1Curves
2550000280 / 280
30250000210 / 640
Estimated T-Level: 26.6 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-27Oliver Kruse5401C691FA8E94831013
Verified2017-09-28Oliver Kruse5401C691FA8E94831013
Verified2017-11-08kkmrkkblmbrbk5401C691FA8E948313229513
Unverified (Reliable)2020-04-19Oliver KruseC413B0B4479790__129588753
History
DateUserTypeResult
2022-12-27USAFSSNF-PM1
B1=1750000, B2=5399784390
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-19Oliver KruseC-PRP
M584951/384626497644426143 : C413B0B4479790__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-08kkmrkkblmbrbkC-PRP
M584951/384626497644426143 : 5401C691FA8E9483
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M584951/384626497644426143 : 5401C691FA8E9483
PRP: Unverified (Reliable)
PRP without proof (not generated)
2017-09-27Oliver KruseC-PRP
M584951/384626497644426143 : 5401C691FA8E9483
PRP: Unverified (Reliable)
PRP without proof (not generated)
2007-08-21Chad DavisF-ECM
Factor: 384626497644426143