Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:





MnDetails
4999
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
209959617.7old
10942711031030.0old
9369902717085191663210280578012245736938126.12015-11-11 16:36:45
3773879300705334015103635615277831536988198344144.82020-10-15 13:30:11
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000014705 / 40830
Estimated T-Level: 51.8 ⓘ
TF below 2^167 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 KruseED0F68B67647F24C3013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbkED0F68B67647F24C3013
Factored
No proof (small exponent)
2017-12-07ATHED0F68B67647F24C3411813
Factored
No proof (small exponent)
2020-04-17Oliver Kruse01DD1DC1CAF5EC1F3315853
Verified
No proof (small exponent)
2020-10-15mrh01DD1DC1CAF5EC1F4425753
History
DateUserTypeResult
2025-05-24masserNF-PP1Start=77/37, B1=2100000000, B2=2097900000000
2023-06-01-anonymous-NF-PM1B1=63000000000, B2=632233314515152350
2021-12-15Oliver KruseNF-PM1B1=1000000000, B2=1002849399191640
2021-12-15ANONYMOUSNF-PM1B1=101101101, B2=242002648447560
2020-10-15mrhC-PRPM4999/209959/1094271103/93699027170851916632102805780122457369/37738793007053340151036356152778315369881983 : 01DD1DC1CAF5EC1F
2020-10-15Ryan PropperF-ECMFactor: 37738793007053340151036356152778315369881983
2020-04-17Oliver KruseC-PRPM4999/209959/1094271103/93699027170851916632102805780122457369 : 01DD1DC1CAF5EC1F
2017-12-07ATHC-PRPM4999/209959/1094271103/93699027170851916632102805780122457369 : ED0F68B67647F24C
2017-10-02kkmrkkblmbrbkC-PRPM4999/209959/1094271103/93699027170851916632102805780122457369 : ED0F68B67647F24C
2017-09-21Oliver KruseC-PRPM4999/known_factors : ED0F68B67647F24C
2015-11-11BloodIceF-ECMFactor: 93699027170851916632102805780122457369
2007-12-18-anonymous-FFactor: 229752066514777