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
13723Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1587957493931237.2old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001329 / 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 KruseCB3CFF4A4FA8267A1013
Verified2017-10-12kkmrkkblmbrbkCB3CFF4A4FA8267A1282913
Verified2020-04-17Oliver Kruse1B28AF4A7E38D4E91258653
Verified2024-07-01kkmrkkblmbrbk1B28AF4A7E38D4E91221053
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M13723/158795749393 : 1B28AF4A7E38D4E9
PRP: Verified
PRP without proof (small exponent)
2024-01-29-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-21JacobZNF-PM1
B1=8000000000, B2=35524619698317750
2022-03-04Ethan O'ConnorNF-PM1
B1=1000000000, B2=248016220902450
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M13723/158795749393 : 1B28AF4A7E38D4E9
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M13723/158795749393 : CB3CFF4A4FA8267A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13723/158795749393 : CB3CFF4A4FA8267A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13723/158795749393 : CB3CFF4A4FA8267A
PRP without proof (not generated)