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
4718443TF
No factors below 271
TF target 265
P-1
B1 = 8000000
B2 = 400000000
ECM
DigitsB1Curves
255000016 / 280
Estimated T-Level: 20.3
LL
StatusDateUserResidueShift
VerifiedStephen WoodF4884F857959EE780
Verified2000-09-23Jason UhlenkottF4884F857959EE782285260
History
DateUserTypeResult
2021-09-02axnNF-PM1
B1=8000000, B2=400000000
2021-01-26-Anonymous-NF
no factor from 2^70 to 2^71
2018-02-25YxinityNF
no factor from 2^69 to 2^70
2018-02-25YxinityNF
no factor from 2^68 to 2^69
2018-02-25YxinityNF
no factor from 2^67 to 2^68
2018-02-25YxinityNF
no factor from 2^66 to 2^67
2017-02-02Ismo LaitelaNF-PM1
B1=1988203, B2=61634303, E=12
2017-01-31Squeeky_SquirrelNF-PM1
B1=290000, B2=8700000, E=12
2016-02-23Mark RoseNF
no factor from 2^1 to 2^61
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-12snme2pm1NF
no factor from 2^65 to 2^66
2015-01-11VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-11VictordeHollanderNF
no factor from 2^63 to 2^64
2011-10-25GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-06-17markrNF
no factor from 2^61 to 2^62
2010-05-22markrNF-PM1
B1=95000, B2=2113750, E=6