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
274171Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 267
TF target 244
TF below 2^102 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 141000000
B2 = 3268208233290
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000676 / 1566
Estimated T-Level: 32.2 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski245B0
VerifiedUnknown245B0
VerifiedBrian J. BeesleyBDAD116EBB48245B0
VerifiedEivind TrielBDAD116EBB48245B27293
Verified2001-11-17Brian J. BeesleyBDAD116EBB48245B171346
History
DateUserTypeResult
2024-09-28tim sNF
no factor from 2^66 to 2^67
2023-02-05masserNF-PP1
Start=6/5, B1=20000000, B2=620000000
2023-01-28masserNF-PP1
Start=114/67, B1=20000000, B2=620000000
2023-01-27masserNF-PP1
Start=2/7, B1=20000000, B2=620000000
2022-06-17Sid & AndyNF-PM1
B1=141000000, B2=3268208233290
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-01-05Gordon SpenceNF
no factor from 2^65 to 2^66
2018-03-24Gordon SpenceNF
no factor from 2^64 to 2^65
2016-02-05Gordon SpenceNF
no factor from 2^63 to 2^64
2016-02-05Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-13NRNF
no factor from 2^61 to 2^62
2013-07-07lycornNF
no factor from 2^60 to 2^61
2012-11-06alpertronNF-PM1
B1=100000000, B2=2000000000, E=12
2012-02-26JossNF-PM1
B1=2223316
2011-07-24JossNF-PM1
B1=1778653
2011-06-26JossNF-PM1
B1=1067191
2009-01-25Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-02Sturle SundeNF
no factor from 2^58 to 2^59