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
19319Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
38639515.2old
1023237378972208240595104392786.42009-06-08 12:31:29
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000003585 / 4588
Estimated T-Level: 38.9
TF below 2^124 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse60A2A4E2F1430C672013
Verified2017-10-12kkmrkkblmbrbk60A2A4E2F1430C672481613
Verified2020-04-17Oliver Kruse2D95A4D753F4F5E721498353
Verified (Factored)2022-05-12Jorge Coveiro2D95A4D753F4F5E71877753
Verified2024-07-01kkmrkkblmbrbk2D95A4D753F4F5E72577053
History
DateUserTypeResult
2024-12-28masserNF-PP1
Start=74/47, B1=132000000, B2=131868000000
2024-12-24masserNF-PP1
Start=6/5, B1=132000000, B2=131868000000
2024-12-20masserNF-PP1
Start=2/7, B1=132000000, B2=131868000000
2024-07-01kkmrkkblmbrbkC-PRP
M19319/102323737897220824059510439/38639 : 2D95A4D753F4F5E7
PRP: Verified
PRP without proof (small exponent)
2023-05-16JacobZNF-PM1
B1=5400000000, B2=15129309322837710
2022-05-12Jorge CoveiroC-PRP
M19319/38639 : 2D95A4D753F4F5E7
PRP: Verified
PRP without proof (small exponent)
2021-08-02ViliamFNF-PM1
B1=250000000, B2=42750000000
2020-04-17Oliver KruseC-PRP
M19319/38639/102323737897220824059510439 : 2D95A4D753F4F5E7
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M19319/38639/102323737897220824059510439 : 60A2A4E2F1430C67
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M19319/38639/102323737897220824059510439 : 60A2A4E2F1430C67
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M19319/38639/102323737897220824059510439 : 60A2A4E2F1430C67
PRP without proof (not generated)
2009-06-08unconnectedF-ECM
Factor: 102323737897220824059510439