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
79228393Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 275
P-1
B1 = 633000
B2 = 400862550
LL
StatusDateUserResidueShift
Verified2017-07-21swegener600CEBD3DC7B409177474092
Verified2025-09-16Eli Modnar600CEBD3DC7B409178573858
History
DateUserTypeResult
2025-09-16Eli ModnarC-LL
600CEBD3DC7B4091
2025-09-11ElectricBillNF-PM1
B1=633000, B2=400862550
2025-08-02ElectricBillNF
no factor from 2^75 to 2^76
2017-07-21swegenerC-LL
600CEBD3DC7B4091
2016-08-19bamNF-PM1
B1=665000, B2=12635000
2016-08-09FredrikNF
no factor from 2^74 to 2^75
2016-07-27FredrikNF
no factor from 2^73 to 2^74
2016-07-27FredrikNF
no factor from 2^72 to 2^73
2016-04-05Mark RoseNF
no factor from 2^63 to 2^64
2016-04-05Mark RoseNF
no factor from 2^64 to 2^65
2016-02-21RichD0NF
no factor from 2^71 to 2^72
2013-07-15Le ComteNF
no factor from 2^70 to 2^71
2013-01-24Cow_tippingNF
no factor from 2^69 to 2^70
2013-01-22Cow_tippingNF
no factor from 2^68 to 2^69
2012-09-27AxelssonNF
no factor from 2^67 to 2^68
2011-03-31Dr. NowakNF
no factor from 2^66 to 2^67
2011-03-24Dr. NowakNF
no factor from 2^65 to 2^66