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:





MnDetails
2689
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
7158119722.8old
90092257826.4old
878270166339866051605835591125964438983417904520289123955182.52026-08-23 20:42:44
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
551100000007726 / 40830
Estimated T-Level: 50.9 ⓘ
TF below 2^164 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver Kruse4F80C66472F8633A2013
Factored
No proof (small exponent)
2017-10-12kkmrkkblmbrbk4F80C66472F8633A2159713
Factored
No proof (small exponent)
2020-04-17Oliver Kruse52CA0CFD0C182342291053
Factored
No proof (small exponent)
2024-02-03Wentao Huang52CA0CFD0C1823422169753
Verified
No proof (small exponent)
2026-08-23Stef4252CA0CFD0C1823423101353
History
DateUserTypeResult
2026-08-23Stef42C-PRPM2689/7158119/90092257/8782701663398660516058355911259644389834179045202891239 : 52CA0CFD0C182342
2026-08-23Stef42F-ECMFactor: 8782701663398660516058355911259644389834179045202891239 / ECM curve 110, B1=110000000, B2=27935103371175, GMP-ECM-param3 Sigma=642487836
2025-04-15masserNF-PP1Start=159/53, B1=4300000000, B2=4295700000000
2024-02-03Wentao HuangC-PRPM2689/7158119/90092257 : 52CA0CFD0C182342
2022-02-13mikrNF-PM1B1=60000000000, B2=314766415184771550
2021-07-06ViliamFNF-PM1B1=1000000000, B2=191000000000
2020-04-17Oliver KruseC-PRPM2689/7158119/90092257 : 52CA0CFD0C182342
2017-10-12kkmrkkblmbrbkC-PRPM2689/7158119/90092257 : 4F80C66472F8633A
2017-09-21Oliver KruseC-PRPM2689/7158119/90092257 : 4F80C66472F8633A
2017-09-21Oliver KruseC-PRPM2689/7158119/90092257 : 4F80C66472F8633A