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
13019443Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 268
P-1
B1 = 1600000
B2 = 1620719100
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Bad2001-08-18Matthew AshtonAB2542414FCA88ED9175284
Verified2004-10-03Marc Getty / Phil Fizur8ECF7974384B31BE8499112
Verified2005-04-02Ars Technica Team Prime Rib8ECF7974384B31BE1326263
History
DateUserTypeResult
2023-12-28RichD0NF
no factor from 2^72 to 2^73
2023-10-03nordiNF-PM1
B1=1600000, B2=1620719100
2023-09-26nordiNF-PM1
B1=1600000
2021-10-22-Anonymous-NF
no factor from 2^71 to 2^72
2021-08-30SRBaseNF
no factor from 2^70 to 2^71
2019-12-07ixfd64NF-PM1
B1=200000, B2=4000000, E=6
2017-05-06YxinityNF
no factor from 2^69 to 2^70
2017-05-06YxinityNF
no factor from 2^68 to 2^69
2017-01-25ConductorNF
no factor from 2^67 to 2^68
2015-04-29mikrNF
no factor from 2^66 to 2^67
2014-05-19NesowaNF
no factor from 2^65 to 2^66
2013-05-29lycornNF
no factor from 2^64 to 2^65