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
103991Factored
FactorDigitsBitsDate
124789201926.9old
71880659031032.72008-07-26 09:17:00
1608227054471237.22008-07-26 09:17:00
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000265 / 1566
Estimated T-Level: 30.8 ⓘ
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver KruseB34EDDC6C6CF13993013
Verified2017-10-13kkmrkkblmbrbkB34EDDC6C6CF139932319713
Verified2020-04-17Oliver Kruse888E740105C68F5035221053
Verified2022-04-15LordJulius888E740105C68F5037838253
History
DateUserTypeResult
2022-04-15LordJuliusC-PRP
M103991/124789201/7188065903/160822705447 : 888E740105C68F50
PRP: Verified
PRP without proof (small exponent)
2022-04-14LordJuliusNF
no factor from 2^61 to 2^62
2022-04-14LordJuliusNF
no factor from 2^60 to 2^61
2022-04-14LordJuliusNF
no factor from 2^59 to 2^60
2022-04-14LordJuliusNF
no factor from 2^58 to 2^59
2022-04-14LordJuliusNF
no factor from 2^57 to 2^58
2020-04-17Oliver KruseC-PRP
M103991/124789201/7188065903/160822705447 : 888E740105C68F50
PRP: Verified
PRP without proof (small exponent)
2018-11-05J.R. AllenNF
no factor from 2^58 to 2^59
2018-11-05J.R. AllenNF
no factor from 2^57 to 2^58
2018-11-05J.R. AllenNF
no factor from 2^52 to 2^57
2017-10-13kkmrkkblmbrbkC-PRP
M103991/124789201/7188065903/160822705447 : B34EDDC6C6CF1399
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M103991/124789201/160822705447/7188065903 : B34EDDC6C6CF1399
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M103991/124789201/160822705447/7188065903 : B34EDDC6C6CF1399
PRP without proof (not generated)
2016-11-12kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2008-07-26J FeitsmaF
Factor: 7188065903
2008-07-26J FeitsmaF
Factor: 160822705447