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

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Exponent Range:










MnStatusDetails
81077Factored
FactorDigitsBitsDate
648617619.3old
961762938558471446.52008-08-26 20:11:18
3200360544963072915824379964712008863138124.62022-01-22 17:31:49
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000739 / 1566
Estimated T-Level: 32.4 ⓘ
TF below 2^102 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-21Oliver KruseD1954B8D9D36C7DB2013
Verified (Factored)2017-10-13kkmrkkblmbrbkD1954B8D9D36C7DB22845613
Verified (Factored)2020-04-17Oliver Kruse35D93FE53E9EB2EA27959353
Verified2022-01-22SRJ287735D93FE53E9EB2EA36017553
P-1 factors
DateFactorB1B2
2022-01-2232003605449630729158243799647120088631100000000020505204029310
History
DateUserTypeResult
2024-01-27masserNF-PP1
Start=6/5, B1=25000000, B2=1475000000
2024-01-27masserNF-PP1
Start=79/61, B1=25000000, B2=1475000000
2024-01-24masserNF-PP1
Start=2/7, B1=25000000, B2=1475000000
2022-01-22SRJ2877C-PRP
M81077/648617/96176293855847/32003605449630729158243799647120088631 : 35D93FE53E9EB2EA
PRP: Verified
PRP without proof (small exponent)
2022-01-22George WoltmanF-PM1
Factor: 32003605449630729158243799647120088631 / (P-1, B1=1000000000, B2=20505204029310)
2020-04-17Oliver KruseC-PRP
M81077/648617/96176293855847 : 35D93FE53E9EB2EA
PRP: Verified
PRP without proof (small exponent)
2017-10-13kkmrkkblmbrbkC-PRP
M81077/648617/96176293855847 : D1954B8D9D36C7DB
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M81077/648617/96176293855847 : D1954B8D9D36C7DB
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M81077/648617/96176293855847 : D1954B8D9D36C7DB
PRP without proof (not generated)
2016-10-31kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2008-08-26-Anonymous-F
Factor: 96176293855847