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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
75457121Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 660000
B2 = 13200000
LL
StatusDateUserResidueShift
Verified2017-04-19curtisc202908458E56DC0263591179
Verified2024-11-27Albert Larsan202908458E56DC026696463
History
DateUserTypeResult
2024-11-27Albert LarsanC-LL
202908458E56DC02
2017-04-19curtiscC-LL
202908458E56DC02
2016-04-03Mark RoseNF
no factor from 2^63 to 2^64
2016-03-06TheJudgerNF-PM1
B1=660000, B2=13200000, E=12
2016-02-14Tim SorberaNF
no factor from 2^74 to 2^75
2016-02-14Tim SorberaNF
no factor from 2^73 to 2^74
2016-02-10RichD0NF
no factor from 2^72 to 2^73
2015-09-05Judge HaleNF
no factor from 2^71 to 2^72
2013-09-05ManpowreNF
no factor from 2^70 to 2^71
2012-12-15JeffreyH-8NF
no factor from 2^69 to 2^70
2010-11-11Hollie L Buchanan IINF
no factor from 2^68 to 2^69
2010-11-05Hollie L Buchanan IINF
no factor from 2^67 to 2^68
2010-11-01ANONYMOUSNF
no factor from 2^66 to 2^67
2010-10-29ANONYMOUSNF
no factor from 2^65 to 2^66
2010-10-29S00030NF
no factor from 2^64 to 2^65