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
1234841Factored
FactorDigitsBitsDate
22839848421276891651.0old
2522963556226110071857.82015-07-17 10:45:27
ECM
DigitsB1Curves
2550000280 / 280
30250000104 / 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
Verified2017-09-29Oliver KruseAA23319E37E71CFB2013
Verified2017-10-20kkmrkkblmbrbkAA23319E37E71CFB255201813
History
DateUserTypeResult
2017-10-20kkmrkkblmbrbkC-PRP
M1234841/2283984842127689/252296355622611007 : AA23319E37E71CFB
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1234841/2283984842127689/252296355622611007 : AA23319E37E71CFB
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=300000, B2=10000000, E=12
2015-07-17TJAOIF
Factor: 252296355622611007 / TF: 57-58