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
2175559Factored
FactorDigitsBitsDate
1944951250790649131857.4old
ECM
DigitsB1Curves
255000095 / 280
Estimated T-Level: 21.7
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Jeff WoodsBD8F7DCD27798FA40
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-09kkmrkkblmbrbk88EE2DF74DC34E161013
Verified2017-10-22Oliver Kruse88EE2DF74DC34E161167921213
History
DateUserTypeResult
2017-10-22Oliver KruseC-PRP
M2175559/194495125079064913 : 88EE2DF74DC34E16
PRP: Verified
PRP without proof (not generated)
2017-10-09kkmrkkblmbrbkC-PRP
M2175559/194495125079064913 : 88EE2DF74DC34E16
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12