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
71819357Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 274
P-1
B1 = 660000
B2 = 13200000
LL
StatusDateUserResidueShift
Verified2016-12-15gbvalor516E1BCD05CA030834165002
Verified2023-10-23Mirra516E1BCD05CA030868475883
History
DateUserTypeResult
2023-10-23MirraC-LL
516E1BCD05CA0308
2020-05-26-Anonymous-NF
no factor from 2^75 to 2^76
2016-12-15gbvalorC-LL
516E1BCD05CA0308
2016-08-02Judge HaleNF
no factor from 2^74 to 2^75
2015-02-15TheJudgerNF-PM1
B1=660000, B2=13200000, E=6
2015-02-03Bill StaffenNF
no factor from 2^71 to 2^74
2013-11-28PascalBieriNF
no factor from 2^70 to 2^71
2012-05-11Simon HarrisonNF
no factor from 2^69 to 2^70
2010-07-19DigiK-ozNF
no factor from 2^68 to 2^69
2010-07-18S00030NF
no factor from 2^67 to 2^68
2010-05-10-Anonymous-NF
no factor from 2^66 to 2^67
2010-05-06-Anonymous-NF
no factor from 2^65 to 2^66
2010-04-30-Anonymous-NF
no factor from 2^64 to 2^65
2008-10-14-Anonymous-NF
no factor to 2^64