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:





MnDetails
79203797
Composite: proven not-prime with Lucas-Lehmer test
No factors below 276
TF target 275
P-1
B1 = 628000
B2 = 376571250
LL
StatusDateUserResidueShiftSoftware
Verified2018-04-13Jon PaceA480BB7AB03DF2E043504475Windows 64-bit,Prime95,v29.4,build 8
Verified2025-09-14Jon Nordstrand/aristoA480BB7AB03DF2E075736747Windows 64-bit,Prime95,v30.19,build 20
History
DateUserTypeResult
2025-09-14Jon Nordstrand/aristoC-LL
A480BB7AB03DF2E0
2025-09-05ElectricBillNF-PM1B1=628000, B2=376571250
2025-07-30ElectricBillNFno factor TF: 75-76
2018-04-13Jon PaceC-LL
A480BB7AB03DF2E0
2016-08-27Smok_bmv NF-PM1B1=665000, B2=12302500
2016-08-23A_SavchenkoNFno factor TF: 74-75
2016-07-21Brian BeuningNFno factor TF: 73-74
2016-07-14CacheOutNFno factor TF: 72-73
2016-04-05Mark RoseNFno factor TF: 64-65
2016-04-04Mark RoseNFno factor TF: 63-64
2013-01-15AllRandomNFno factor TF: 71-72
2013-01-15AllRandomNFno factor TF: 70-71
2011-03-12sannerud.comNFno factor TF: 69-70
2011-02-23sannerud.comNFno factor TF: 68-69
2010-12-05vats09NFno factor TF: 67-68
2010-12-04Hrudey4098NFno factor TF: 66-67
2010-11-18-anonymous-NFno factor TF: 65-66
2004-09-02-anonymous-NFno factor TF: 1-63
2001-05-06JossNFno factor TF: 1-60
1999-12-30-anonymous-NFno factor TF: 1-53