Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
8963
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
663263619.3old
161012631512773047174163273212993.7old
1210290752223891213636326432515225767138123.22018-05-14 17:11:10
1828366091277379270455954804271948353887941133.72021-04-27 20:05:34
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000006952 / 16550
Estimated T-Level: 47.1 ⓘ
TF below 2^151 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 KruseB2BE2D8397C04F182013
Factored
No proof (small exponent)
2017-10-12kkmrkkblmbrbkB2BE2D8397C04F182516313
Factored
No proof (small exponent)
2018-05-14HexaflexagonB30A0979CDC63A17326653
Factored
No proof (small exponent)
2018-05-15BattlemaxxB30A0979CDC63A173281353
Verified
No proof (small exponent)
2021-04-27mikrB30A0979CDC63A174366553
Verified
No proof (small exponent)
2021-04-29_p95holder_B30A0979CDC63A174503153
Verified
No proof (small exponent)
2021-05-10oodairaB30A0979CDC63A174459653
History
DateUserTypeResult
2025-04-24masserNF-PP1Start=175/17, B1=1000000000, B2=999000000000
2023-07-26JacobZNF-PM1B1=65000000000, B2=251099672798124150
2021-12-16ANONYMOUSNF-PM1B1=100000000
2021-05-10oodairaC-PRPM8963/663263/16101263151277304717416327321/12102907522238912136363264325152257671/18283660912773792704559548042719483538879 : B30A0979CDC63A17
2021-04-29_p95holder_C-PRPM8963/663263/16101263151277304717416327321/12102907522238912136363264325152257671/18283660912773792704559548042719483538879 : B30A0979CDC63A17
2021-04-27mikrC-PRPM8963/663263/16101263151277304717416327321/12102907522238912136363264325152257671/18283660912773792704559548042719483538879 : B30A0979CDC63A17
2021-04-27Bruno VictalF-ECMFactor: 18283660912773792704559548042719483538879
2018-05-15BattlemaxxC-PRPM8963/663263/16101263151277304717416327321/12102907522238912136363264325152257671 : B30A0979CDC63A17
2018-05-14HexaflexagonC-PRPM8963/663263/16101263151277304717416327321/12102907522238912136363264325152257671 : B30A0979CDC63A17
2018-05-14HexaflexagonF-ECMFactor: 12102907522238912136363264325152257671
2017-10-12kkmrkkblmbrbkC-PRPM8963/663263/16101263151277304717416327321 : B2BE2D8397C04F18
2017-09-21Oliver KruseC-PRPM8963/663263/16101263151277304717416327321 : B2BE2D8397C04F18
2017-09-21Oliver KruseC-PRPM8963/663263/16101263151277304717416327321 : B2BE2D8397C04F18