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
8081Factored
FactorDigitsBitsDate
34988144091031.7old
362635683111135.1old
569943717671135.7old
2720507923671238.0old
13437430458218301046572270.2old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000008864 / 9201
Estimated T-Level: 44.8
TF below 2^144 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse7023AB48E1D93BF55013
Verified2017-10-02kkmrkkblmbrbk7023AB48E1D93BF55013
Verified2017-12-07ATH7023AB48E1D93BF55307913
Unverified2020-04-17Oliver Kruse154003DB2731B8__5329053
History
DateUserTypeResult
2023-05-27JacobZNF-PM1
B1=73000000000, B2=299074993103236350
2021-08-27Seth_TrNF-PM1
B1=400000000
2021-08-27Seth_TrNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M8081/3498814409/36263568311/56994371767/272050792367/1343743045821830104657 : 154003DB2731B8__
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M8081/3498814409/36263568311/56994371767/272050792367/1343743045821830104657 : 7023AB48E1D93BF5
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M8081/3498814409/36263568311/56994371767/272050792367/1343743045821830104657 : 7023AB48E1D93BF5
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M8081/known_factors : 7023AB48E1D93BF5
PRP without proof (not generated)