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
6907853Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 267
P-1
B1 = 3500000
B2 = 9616446840
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
LL
StatusDateUserResidueShift
Verified1999-03-26INTERSHOP Communications163CED669656D3FE0
Verified2001-08-31Goede Schueler/Christoph Steinbeck163CED669656D3FE5431089
History
DateUserTypeResult
2023-06-27ThaNF-PM1
B1=3500000, B2=9616446840
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-08-10SRBaseNF
no factor from 2^70 to 2^71
2021-05-14takahashiNF-PM1
B1=1000000, B2=30000000, E=12
2020-12-21takahashiNF
no factor from 2^69 to 2^70
2019-12-31mnd9NF
no factor from 2^68 to 2^69
2019-05-08takahashiNF-PM1
B1=300000, B2=5000000, E=6
2018-05-23ramgeisNF
no factor from 2^67 to 2^68
2016-04-01Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-21VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-18lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2009-06-09Roman MaznichenkoNF-PM1
B1=85000, B2=1572500, E=6