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
79203797Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 275
P-1
B1 = 628000
B2 = 376571250
LL
StatusDateUserResidueShift
Verified2018-04-13Jon PaceA480BB7AB03DF2E043504475
Verified2025-09-14Jon Nordstrand/aristoA480BB7AB03DF2E075736747
History
DateUserTypeResult
2025-09-14Jon Nordstrand/aristoC-LL
A480BB7AB03DF2E0
2025-09-05ElectricBillNF-PM1
B1=628000, B2=376571250
2025-07-30ElectricBillNF
no factor from 2^75 to 2^76
2018-04-13Jon PaceC-LL
A480BB7AB03DF2E0
2016-08-27Smok_bmv NF-PM1
B1=665000, B2=12302500
2016-08-23A_SavchenkoNF
no factor from 2^74 to 2^75
2016-07-21Brian BeuningNF
no factor from 2^73 to 2^74
2016-07-14CacheOutNF
no factor from 2^72 to 2^73
2016-04-05Mark RoseNF
no factor from 2^64 to 2^65
2016-04-04Mark RoseNF
no factor from 2^63 to 2^64
2013-01-15AllRandomNF
no factor from 2^71 to 2^72
2013-01-15AllRandomNF
no factor from 2^70 to 2^71
2011-03-12sannerud.comNF
no factor from 2^69 to 2^70
2011-02-23sannerud.comNF
no factor from 2^68 to 2^69
2010-12-05vats09NF
no factor from 2^67 to 2^68
2010-12-04Hrudey4098NF
no factor from 2^66 to 2^67
2010-11-18-Anonymous-NF
no factor from 2^65 to 2^66