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

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Exponent Range:





MnDetails
14983
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
848028260959282265168334321742420134112.7old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001506 / 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 KruseD378A27A245EA2E91013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbkD378A27A245EA2E911113113
Verified
No proof (small exponent)
2020-04-17Oliver KruseD5AC778E9D4FA7811423353
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbkD5AC778E9D4FA7811931653
Verified
No proof (small exponent)
2025-01-27Kamil GorskiD5AC778E9D4FA78111362353
History
DateUserTypeResult
2025-02-04masserNF-PP1Start=2/7, B1=355000000, B2=354645000000
2025-02-02masserNF-PP1Start=137/37, B1=355000000, B2=354645000000
2025-01-27Kamil GorskiC-PRPM14983/8480282609592822651683343217424201 : D5AC778E9D4FA781
2025-01-27Kamil GorskiF-ECMFactor: 8480282609592822651683343217424201 / ECM curve 9, B1=11000000, B2=125707411830, Edwards Sigma=6011034120786606
2025-01-12masserNF-PP1Start=6/5, B1=355000000, B2=354645000000
2024-07-01kkmrkkblmbrbkC-PRPM14983/8480282609592822651683343217424201 : D5AC778E9D4FA781
2024-03-07-anonymous-NF-PM1B1=100000000000, B2=122154521813133810
2023-05-27JacobZNF-PM1B1=7200000000, B2=29020111855985250
2020-04-17Oliver KruseC-PRPM14983/8480282609592822651683343217424201 : D5AC778E9D4FA781
2017-10-12kkmrkkblmbrbkC-PRPM14983/8480282609592822651683343217424201 : D378A27A245EA2E9
2017-09-21Oliver KruseC-PRPM14983/8480282609592822651683343217424201 : D378A27A245EA2E9
2017-09-21Oliver KruseC-PRPM14983/8480282609592822651683343217424201 : D378A27A245EA2E9
2002-09-07-anonymous-NFno factor TF: 1-57
2002-07-14-anonymous-NF-PM1B1=65536, B2=6553600, E=12
2002-06-09-anonymous-NF-PM1B1=32768, B2=3276800
2002-04-28-anonymous-NF-PM1B1=16384, B2=1638400
2001-10-06-anonymous-NF-PM1B1=43000000, B2=4290000000
2001-07-17Alex KruppaNF-PM1B1=1000000, B2=100000000
2001-04-29-anonymous-NF-PM1B1=100000, B2=10000000
2000-09-15-anonymous-NFno factor TF: 1-56
2000-03-01-anonymous-NFno factor TF: 53-54
1999-09-14-anonymous-NFno factor TF: 52-53