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
11953Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
267394108391134.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001467 / 9201
Estimated T-Level: 40.8
TF below 2^131 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse0343194F96EA143C1013
Verified2017-10-12kkmrkkblmbrbk0343194F96EA143C11188213
Verified2020-04-17Oliver KruseA9D476884C34999D1783553
Verified2024-07-01kkmrkkblmbrbkA9D476884C34999D1290653
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M11953/26739410839 : A9D476884C34999D
PRP: Verified
PRP without proof (small exponent)
2023-04-06-Anonymous-NF-PM1
B1=100000000000, B2=122192573512709700
2020-04-17Oliver KruseC-PRP
M11953/26739410839 : A9D476884C34999D
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M11953/26739410839 : 0343194F96EA143C
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11953/26739410839 : 0343194F96EA143C
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11953/26739410839 : 0343194F96EA143C
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12