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
13883
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
27767514.8old
37542970232044791651.72008-08-26 19:58:41
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001521 / 9201
Estimated T-Level: 40.8 ⓘ
TF below 2^131 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 KruseB98CE1E0C4FBED852013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbkB98CE1E0C4FBED8521166013
Verified
No proof (small exponent)
2020-04-17Oliver KruseB34CA14B29BF8FBC2389353
Factored
No proof (small exponent)
2022-05-12Jorge CoveiroB34CA14B29BF8FBC1604653
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbkB34CA14B29BF8FBC2844653
History
DateUserTypeResult
2025-02-20masserNF-PP1Start=109/59, B1=430000000, B2=429570000000
2025-02-10masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2025-01-23masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2024-07-01kkmrkkblmbrbkC-PRPM13883/27767/3754297023204479 : B34CA14B29BF8FBC
2023-11-30-anonymous-NF-PM1B1=100000000000, B2=124499752678561260
2023-05-22JacobZNF-PM1B1=7900000000, B2=32522539163164050
2023-02-11USAFSSNF-PM1B1=30000000, B2=2010341563230
2022-05-12Jorge CoveiroC-PRPM13883/27767 : B34CA14B29BF8FBC
2022-02-06ANONYMOUSNF-PM1B1=50000
2020-04-17Oliver KruseC-PRPM13883/27767/3754297023204479 : B34CA14B29BF8FBC
2017-10-12kkmrkkblmbrbkC-PRPM13883/27767/3754297023204479 : B98CE1E0C4FBED85
2017-09-21Oliver KruseC-PRPM13883/27767/3754297023204479 : B98CE1E0C4FBED85
2017-09-21Oliver KruseC-PRPM13883/27767/3754297023204479 : B98CE1E0C4FBED85
2008-08-26-anonymous-F-PM1Factor: 3754297023204479