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
1528333Factored
FactorDigitsBitsDate
9169999723.1old
82529983826.32008-07-15 10:03:45
315854224645016306752863372684.72015-03-26 11:44:02
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-05Oliver Kruse62FBB086976C2AF43013
Verified2017-11-10kkmrkkblmbrbk62FBB086976C2AF4325801813
P-1 factors
DateFactorB1B2
2015-03-263158542246450163067528633750000015000000
History
DateUserTypeResult
2017-11-10kkmrkkblmbrbkC-PRP
M1528333/9169999/82529983/31585422464501630675286337 : 62FBB086976C2AF4
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1528333/9169999/82529983/31585422464501630675286337 : 62FBB086976C2AF4
PRP: Verified
PRP without proof (not generated)
2017-10-01Oliver KruseC-PRP
M1528333/9169999/82529983/31585422464501630675286337 : 62FBB086976C2AF4
PRP without proof (not generated)
2015-03-26alpertronF-PM1
Factor: 31585422464501630675286337 / (P-1, B1=500000, B2=15000000, E=12)
2008-07-15J FeitsmaF
Factor: 82529983