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
13687Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
11228901462488151371960.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001349 / 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 KruseCF6AB9AA2E8665B31013
Verified2017-10-12kkmrkkblmbrbkCF6AB9AA2E8665B31537113
Verified2020-04-17Oliver KruseF444928232E5F87111088453
Verified2024-07-01kkmrkkblmbrbkF444928232E5F871125153
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M13687/1122890146248815137 : F444928232E5F871
PRP: Verified
PRP without proof (small exponent)
2024-01-29-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-20JacobZNF-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
M13687/1122890146248815137 : F444928232E5F871
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M13687/1122890146248815137 : CF6AB9AA2E8665B3
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13687/1122890146248815137 : CF6AB9AA2E8665B3
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13687/1122890146248815137 : CF6AB9AA2E8665B3
PRP without proof (not generated)