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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
19469Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1207079720.2old
48544783371032.22008-08-26 19:58:56
82711710231032.92008-08-26 19:58:56
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004075 / 4588
Estimated T-Level: 39.4
TF below 2^126 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseA8752B66DE1A23353013
Verified2017-10-12kkmrkkblmbrbkA8752B66DE1A23353600113
Verified2020-04-17Oliver KruseED9D698123C23C29349053
Verified2024-07-01kkmrkkblmbrbkED9D698123C23C293771853
History
DateUserTypeResult
2024-12-30masserNF-PP1
Start=111/23, B1=132000000, B2=131868000000
2024-12-22masserNF-PP1
Start=2/7, B1=132000000, B2=131868000000
2024-12-21masserNF-PP1
Start=6/5, B1=132000000, B2=131868000000
2024-07-01kkmrkkblmbrbkC-PRP
M19469/1207079/4854478337/8271171023 : ED9D698123C23C29
PRP: Verified
PRP without proof (small exponent)
2023-04-20JacobZNF-PM1
B1=5400000000, B2=15129309322837710
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M19469/1207079/4854478337/8271171023 : ED9D698123C23C29
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M19469/1207079/4854478337/8271171023 : A8752B66DE1A2335
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M19469/1207079/4854478337/8271171023 : A8752B66DE1A2335
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M19469/1207079/4854478337/8271171023 : A8752B66DE1A2335
PRP without proof (not generated)
2008-08-26-Anonymous-F
Factor: 8271171023
2008-08-26-Anonymous-F
Factor: 4854478337