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
4951
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
2432849412471237.8old
1148935150448885211856.7old
21542174827483742171960.9old
163280837785840495760201207803321751937120.32015-11-06 06:22:58
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000015664 / 40830
Estimated T-Level: 51.9 ⓘ
TF below 2^167 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse1E4EF386A7F474AC4013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbk1E4EF386A7F474AC4013
Verified
No proof (small exponent)
2017-12-07ATH1E4EF386A7F474AC4154113
Verified
No proof (small exponent)
2020-04-17Oliver Kruse875002833D6193814252853
Verified
No proof (small exponent)
2024-02-03Wentao Huang875002833D6193814327953
History
DateUserTypeResult
2025-05-23masserNF-PP1Start=197/29, B1=2100000000, B2=2097900000000
2024-02-03Wentao HuangC-PRPM4951/243284941247/114893515044888521/2154217482748374217/1632808377858404957602012078033217519 : 875002833D619381
2023-05-31-anonymous-NF-PM1B1=64000000000, B2=642189744639793350
2021-12-15Oliver KruseNF-PM1B1=1000000000, B2=1002849399191640
2021-12-14ANONYMOUSNF-PM1B1=101101101, B2=242002648447560
2021-12-14ANONYMOUSNF-PM1B1=1000000, B2=58539200499780
2020-04-17Oliver KruseC-PRPM4951/243284941247/114893515044888521/2154217482748374217/1632808377858404957602012078033217519 : 875002833D619381
2017-12-07ATHC-PRPM4951/243284941247/114893515044888521/2154217482748374217/1632808377858404957602012078033217519 : 1E4EF386A7F474AC
2017-10-02kkmrkkblmbrbkC-PRPM4951/243284941247/114893515044888521/2154217482748374217/1632808377858404957602012078033217519 : 1E4EF386A7F474AC
2017-09-21Oliver KruseC-PRPM4951/known_factors : 1E4EF386A7F474AC
2015-11-06Bo-KajF-ECMFactor: 1632808377858404957602012078033217519