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:










MnStatusDetails
14983Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
848028260959282265168334321742420134112.7old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001320 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseD378A27A245EA2E91013
Verified2017-10-12kkmrkkblmbrbkD378A27A245EA2E911113113
Verified2020-04-17Oliver KruseD5AC778E9D4FA7811423353
Verified2024-07-01kkmrkkblmbrbkD5AC778E9D4FA7811931653
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M14983/8480282609592822651683343217424201 : D5AC778E9D4FA781
PRP: Verified
PRP without proof (small exponent)
2024-03-07-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-27JacobZNF-PM1
B1=7200000000, B2=29020111855985250
2020-04-17Oliver KruseC-PRP
M14983/8480282609592822651683343217424201 : D5AC778E9D4FA781
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M14983/8480282609592822651683343217424201 : D378A27A245EA2E9
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14983/8480282609592822651683343217424201 : D378A27A245EA2E9
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14983/8480282609592822651683343217424201 : D378A27A245EA2E9
PRP without proof (not generated)