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
1422671Factored
FactorDigitsBitsDate
196328599927.5old
163322630811133.92008-07-15 09:59:25
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
Verified2017-09-30Oliver KruseF7FA34BFF41E4A712013
Verified2017-10-26kkmrkkblmbrbkF7FA34BFF41E4A71224766613
History
DateUserTypeResult
2017-10-26kkmrkkblmbrbkC-PRP
M1422671/196328599/16332263081 : F7FA34BFF41E4A71
PRP: Verified
PRP without proof (not generated)
2017-09-30Oliver KruseC-PRP
M1422671/196328599/16332263081 : F7FA34BFF41E4A71
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-15J FeitsmaF
Factor: 16332263081