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
7211
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
14423513.8old
57689515.8old
475927618.9old
48059061107239139591962.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000002871 / 16550
Estimated T-Level: 45.9 ⓘ
TF below 2^147 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 Kruse5ECD6E85F35D60914013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbk5ECD6E85F35D60914111013
Verified
No proof (small exponent)
2020-04-17Oliver KruseDEA55CFEDBE108A84456053
Factored
No proof (small exponent)
2022-05-12Jorge CoveiroDEA55CFEDBE108A816653
Verified
No proof (small exponent)
2024-02-03Wentao HuangDEA55CFEDBE108A84119853
History
DateUserTypeResult
2025-04-02masserNF-PP1Start=177/13, B1=830000000, B2=829170000000
2025-03-22masserNF-PP1Start=6/5, B1=830000000, B2=829170000000
2025-03-14masserNF-PP1Start=2/7, B1=830000000, B2=829170000000
2024-02-03Wentao HuangC-PRPM7211/14423/57689/475927/4805906110723913959 : DEA55CFEDBE108A8
2023-08-26-anonymous-NF-PM1B1=34000000000, B2=142096338314180250
2022-05-12Jorge CoveiroC-PRPM7211/14423 : DEA55CFEDBE108A8
2021-12-08onlinegameNF-PM1B1=1000000000, B2=10000000000
2020-04-17Oliver KruseC-PRPM7211/14423/57689/475927/4805906110723913959 : DEA55CFEDBE108A8
2017-10-12kkmrkkblmbrbkC-PRPM7211/14423/57689/475927/4805906110723913959 : 5ECD6E85F35D6091
2017-09-21Oliver KruseC-PRPM7211/14423/57689/475927/4805906110723913959 : 5ECD6E85F35D6091
2017-09-21Oliver KruseC-PRPM7211/14423/57689/475927/4805906110723913959 : 5ECD6E85F35D6091
2009-10-25Carsten KossendeyFFactor: 395994321235369