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
35911Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 266
TF target 244
TF below 2^141 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 8000000000
B2 = 1871010236495400
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000007024 / 9201
Estimated T-Level: 43.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedUnknown68DE0
VerifiedGeorge WoltmanF2ECA37BDA16E8DE0
VerifiedBrian J. BeesleyF2ECA37BDA16E8DE0
Verified2015-04-11MadPooF2ECA37BDA16E8DE25769
History
DateUserTypeResult
2023-08-26masserNF-PP1
Start=6/5, B1=190000000, B2=34010000000
2023-08-04masserNF-PM1
B1=8000000000, B2=1871010236495400
2023-07-06masserNF-PP1
Start=110/41, B1=190000000, B2=7600000000
2021-08-10YxinityNF
no factor from 2^65 to 2^66
2021-07-14YxinityNF
no factor from 2^65 to 2^66
2021-05-06ATHNF-PP1
Start=2/7, B1=500000000, B2=105500000000
2019-11-02YxinityNF
no factor from 2^64 to 2^65
2019-11-01YxinityNF
no factor from 2^64 to 2^65
2018-08-01YxinityNF
no factor from 2^63 to 2^64
2018-08-01YxinityNF
no factor from 2^63 to 2^64
2018-05-04mikrNF-PM1
B1=12000000000, B2=960000000000, E=12
2016-11-19Sid & AndyNF
no factor from 2^62 to 2^63
2016-04-18JossNF-PM1
B1=200000000, B2=8924129109, E=12
2016-02-23LaurVNF
no factor from 2^57 to 2^58
2015-04-11MadPooC-LL
F2ECA37BDA16E8DE
2012-08-02bcp19NF
no factor from 2^61 to 2^62
2012-08-02bcp19NF
no factor from 2^60 to 2^61
2012-07-06alpertronNF-PM1
B1=100000000, B2=2000000000, E=12
2012-05-29JossNF-PM1
B1=74446326
2011-09-24JossNF-PM1
B1=49630884
2009-02-08Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-18Sturle SundeNF
no factor from 2^58 to 2^59