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
6918761Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 267
P-1
B1 = 4000000
B2 = 456818670
ECM
DigitsB1Curves
2550000103 / 280
Estimated T-Level: 21.8 ⓘ
LL
StatusDateUserResidueShift
Verified1999-10-21Jarek Horodecki152429E64E44CF8A0
Verified2002-05-11Stephen Wood152429E64E44CF8A4930368
History
DateUserTypeResult
2021-12-02Seth_TrNF-PM1
B1=4000000, B2=456818670
2021-11-19Seth_TrNF-PM1
B1=3000000, B2=75000000, E=12
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-08-10SRBaseNF
no factor from 2^70 to 2^71
2021-07-18takahashiNF
no factor from 2^69 to 2^70
2020-05-15TJAOINF
no factor from 2^68 to 2^69
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-02Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-17lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-09-03Carsten KossendeyNF-PM1
B1=440000, B2=13420000, E=12