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
4253233Factored
FactorDigitsBitsDate
875824145611242504232066.22018-04-24 02:19:40
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Paul Victor Novarese58886F2AF2FB7AB50
Bad1998-07-05Team love_fest15A188A10F62E3FE0
Verified (Factored)2000-05-05Luigi Morelli58886F2AF2FB7AB5459945
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-04-24ATH91AF022D50E4FD421416168253
Verified2018-04-27Oliver Kruse91AF022D50E4FD421263647953
History
DateUserTypeResult
2018-04-27Oliver KruseC-PRP
M4253233/87582414561124250423 : 91AF022D50E4FD42
PRP: Verified
PRP without proof (not generated)
2018-04-24ATHC-PRP
M4253233/87582414561124250423 : 91AF022D50E4FD42
PRP: Verified
PRP without proof (not generated)
2018-04-24chuenkitF
Factor: 87582414561124250423 / TF: 66-67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-10snme2pm1NF
no factor from 2^65 to 2^66
2013-12-31lycornNF
no factor from 2^64 to 2^65
2013-12-21JayderNF
no factor from 2^63 to 2^64
2013-09-12Squeeky_SquirrelNF-PM1
B1=145000, B2=3588750, E=6
2012-01-31GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-01-07markrNF
no factor from 2^61 to 2^62