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
12653Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
24213539991031.2old
343005368871135.02008-08-26 19:58:37
133174043538307911753.62008-08-26 19:58:38
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001267 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse960587C11EF527273013
Verified2017-10-02kkmrkkblmbrbk960587C11EF527273013
Verified2017-12-07ATH960587C11EF5272731171913
Verified2020-04-17Oliver Kruse0ACA3B8E76D918273406253
Verified2024-07-01kkmrkkblmbrbk0ACA3B8E76D918273852353
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M12653/13317404353830791/2421353999/34300536887 : 0ACA3B8E76D91827
PRP: Verified
PRP without proof (small exponent)
2023-05-13Anton RepkoNF-PM1
B1=100000000000, B2=120417199046794650
2022-02-05JossNF-PM1
B1=1000000, B2=3910366209750
2020-04-17Oliver KruseC-PRP
M12653/2421353999/34300536887/13317404353830791 : 0ACA3B8E76D91827
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M12653/2421353999/34300536887/13317404353830791 : 960587C11EF52727
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M12653/2421353999/34300536887/13317404353830791 : 960587C11EF52727
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12653/2421353999/34300536887/13317404353830791 : 960587C11EF52727
PRP without proof (not generated)
2008-08-26-Anonymous-F-PM1
Factor: 13317404353830791
2008-08-26-Anonymous-F
Factor: 34300536887