Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2263687Factored
FactorDigitsBitsDate
240889381747100725758323992684.32020-03-03 12:11:12
ECM
DigitsB1Curves
255000044 / 280
Estimated T-Level: 20.8
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Pauli ViljamaaD6AE1DFA592C60C60
Verified (Factored)Jim MulveyD6AE1DFA592C60C60
Verified (Factored)1999-05-23George BarbanisD6AE1DFA592C60C61277438
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-03-04Christoph ZengerFC5A980DD06EE8D11172843753
Verified2020-03-05fre_gamesFC5A980DD06EE8D11197742053
History
DateUserTypeResult
2020-03-05fre_gamesC-PRP
M2263687/24088938174710072575832399 : FC5A980DD06EE8D1
PRP: Verified
PRP without proof (not generated)
2020-03-04Christoph ZengerC-PRP
M2263687/24088938174710072575832399 : FC5A980DD06EE8D1
PRP: Verified
PRP without proof (not generated)
2020-03-03mnd9F-ECM
Factor: 24088938174710072575832399 / (ECM curve 2, B1=50000, B2=5000000, Sigma=4852068382691212)
2019-06-30BigBrotherNF-PM1
B1=1000000, B2=20000000, E=12
2019-05-06TJAOINF
no factor from 2^67 to 2^68
2017-01-15Gordon SpenceNF
no factor from 2^66 to 2^67
2016-03-29JossNF-PM1
B1=342144, B2=3421440, E=6
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-10-30ramgeisNF
no factor from 2^65 to 2^66
2015-03-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-10VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-02JossNF-PM1
B1=128354
2013-12-06Jerry HallettNF
no factor from 2^62 to 2^63
2012-05-05Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-04markrNF-PM1
B1=100000, B2=2100000, E=6
2010-11-12JossNF-PM1
B1=30000
2010-11-07JossNF-PM1
B1=15000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61