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
31081TF
No factors below 266
TF target 244
TF below 2^133 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 50000000000
B2 = 65554818495115950
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000003079 / 9201
Estimated T-Level: 41.7 ⓘ
LL
StatusDateUserResidueShift
VerifiedUnknown35300
VerifiedGeorge WoltmanFBDFA4DE9779B5300
VerifiedBrian J. BeesleyFBDFA4DE9779B5300
Verified2015-04-11MadPooFBDFA4DE9779B530580
History
DateUserTypeResult
2023-07-06masserNF-PP1
Start=166/23, B1=230000000, B2=9200000000
2022-02-18Jan S.NF-PM1
B1=50000000000, B2=65554818495115950
2021-05-06ATHNF-PP1
Start=2/7, B1=500000000, B2=101500000000
2020-11-27YxinityNF
no factor from 2^65 to 2^66
2020-11-27YxinityNF
no factor from 2^65 to 2^66
2019-12-13YxinityNF
no factor from 2^64 to 2^65
2019-12-12YxinityNF
no factor from 2^64 to 2^65
2018-06-03YxinityNF
no factor from 2^63 to 2^64
2018-06-02YxinityNF
no factor from 2^63 to 2^64
2016-11-30Sid & AndyNF
no factor from 2^62 to 2^63
2016-02-23LaurVNF
no factor from 2^57 to 2^58
2015-04-11MadPooC-LL
FBDFA4DE9779B530
2013-04-10bcp19NF-PM1
B1=10000000000, B2=100000000000, E=12
2012-03-23bcp19NF
no factor from 2^61 to 2^62
2012-03-23bcp19NF
no factor from 2^60 to 2^61
2009-01-18Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-05Sturle SundeNF
no factor from 2^58 to 2^59