83 329 049 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	665000
B2 =	12967500

Status	Date	User	Residue	Shift	Software
Verified	2018-01-24	NPC	1F8079A651BCC57D	74404934	Windows Service,Prime95,v28.9,build 2
Verified	2025-04-05	AgreeingMist	1F8079A651BCC57D	17323894	Linux 64-bit,Prime95,v30.19,build 20

History

Date	User	Type	Result
2025-04-05	AgreeingMist	C-LL	1F8079A651BCC57D
2018-01-24	NPC	C-LL	1F8079A651BCC57D
2017-09-04	Oliver Kruse	NF-PM1	B1=665000, B2=12967500, E=12
2017-02-19	TheJudger	NF	no factor TF: 75-76
2016-12-18	-anonymous-	NF	no factor TF: 74-75
2016-12-18	-anonymous-	NF	no factor TF: 73-74
2016-12-18	-anonymous-	NF	no factor TF: 72-73
2016-12-18	-anonymous-	NF	no factor TF: 71-72
2014-08-07	Ryan Propper	NF	no factor TF: 70-71
2013-08-21	-anonymous-	NF	no factor TF: 69-70
2013-08-17	PascalBieri	NF	no factor TF: 68-69
2013-08-14	PascalBieri	NF	no factor TF: 67-68
2013-08-13	Le Comte	NF	no factor TF: 66-67
2012-08-08	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-19	Architects Cubed	NF	no factor TF: 64-65