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
15527Factored
FactorDigitsBitsDate
4576102534091238.7old
67619413586323265450092272.52008-08-29 02:24:36
9310278083484246342795121906103995906338126.12021-12-10 10:44:40
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000001427 / 4588
Estimated T-Level: 36.6
TF below 2^116 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse9B558421B8EFDBDA2013
Verified (Factored)2017-10-12kkmrkkblmbrbk9B558421B8EFDBDA21011613
Verified (Factored)2020-04-17Oliver KruseFB50DE0076F70B542180353
Verified2021-12-10nordiFB50DE0076F70B5431222153
History
DateUserTypeResult
2023-05-29JacobZNF-PM1
B1=6900000000, B2=29520458628010350
2022-04-11Ethan O'ConnorNF-PM1
B1=10000000, B2=4626851679450
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2021-12-10nordiC-PRP
M15527/457610253409/6761941358632326545009/93102780834842463427951219061039959063 : FB50DE0076F70B54
PRP: Verified
PRP without proof (small exponent)
2021-12-10nordiF-ECM
Factor: 93102780834842463427951219061039959063 / (ECM curve 504, B1=3000000, B2=300000000, Sigma=5563546201078335)
2020-04-17Oliver KruseC-PRP
M15527/457610253409/6761941358632326545009 : FB50DE0076F70B54
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M15527/457610253409/6761941358632326545009 : 9B558421B8EFDBDA
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M15527/457610253409/6761941358632326545009 : 9B558421B8EFDBDA
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M15527/457610253409/6761941358632326545009 : 9B558421B8EFDBDA
PRP without proof (not generated)
2008-08-29-Anonymous-F-ECM
Factor: 6761941358632326545009