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
6689Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
142168007927.1old
1243985947002937691856.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001562 / 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 Kruse1E016BDF5B2568622013
Verified2017-10-12kkmrkkblmbrbk1E016BDF5B2568622136813
Verified2020-04-17Oliver Kruse181BE3913089754B2432653
Verified2024-02-03Wentao Huang181BE3913089754B226653
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6689/142168007/124398594700293769 : 181BE3913089754B
PRP: Verified
PRP without proof (small exponent)
2023-08-11-Anonymous-NF-PM1
B1=36000000000, B2=144600212653396500
2021-12-18Oliver KruseNF-PM1
B1=1000000000, B2=1080854750315340
2020-04-17Oliver KruseC-PRP
M6689/142168007/124398594700293769 : 181BE3913089754B
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M6689/142168007/124398594700293769 : 1E016BDF5B256862
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6689/142168007/124398594700293769 : 1E016BDF5B256862
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6689/142168007/124398594700293769 : 1E016BDF5B256862
PRP without proof (not generated)