25 765 027 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 2⁷⁵

TF target 2⁷⁰

P-1

B1 =	886000
B2 =	42901000

Status	Date	User	Residue	Shift	Software
Verified	2004-10-18	e_wuwei	F60A20F553648C27	19245571	Windows,Prime95,v23,(aka WZ1)
Verified	2012-05-06	Dubslow	F60A20F553648C27	0	CUDALucas v2.00a

History

Date	User	Type	Result
2021-11-10	Architects Cubed	NF-PM1	B1=886000, B2=42901000
2021-10-17	TheJudger	NF	no factor TF: 74-75
2021-09-19	TheJudger	NF	no factor TF: 73-74
2021-08-28	TheJudger	NF	no factor TF: 72-73
2021-08-28	TheJudger	NF	no factor TF: 71-72
2021-07-10	mikr	NF	no factor TF: 70-71
2017-03-26	ramgeis	NF	no factor TF: 69-70
2012-05-06	Dubslow	C-LL	F60A20F553648C27
2011-12-17	bcp19	NF	no factor TF: 68-69
2011-10-13	Dubslow	NF	no factor TF: 67-68
2004-10-18	-anonymous-	C-LL	F60A20F553648C27
2004-09-16	Team Prime Rib	NF	no factor TF: 1-67
2004-09-16	-anonymous-	NF-PM1	B1=380000
2004-04-29	1997rj7	NF	no factor TF: 1-62
2001-08-12	Net_Force	NF	no factor TF: 1-56