25 719 667 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 =	280000
B2 =	3500000

Status	Date	User	Residue	Shift	Software
Bad	2004-12-13	Marc Honey	398453CA25922F24	19962493	Windows,Prime95,v23,NT service,(aka WZ5)
Verified	2012-07-09	Sid & Andy	C2A70D53E1952B6E	3754541	Windows 64-bit,Prime95,v26.2,build 1
Verified	2012-07-12	Dubslow	C2A70D53E1952B6E	0	CUDALucas v2.04 Beta

History

Date	User	Type	Result
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
2021-07-07	mikr	NF	no factor TF: 70-71
2017-03-26	ramgeis	NF	no factor TF: 69-70
2012-07-12	Dubslow	C-LL	C2A70D53E1952B6E
2012-07-09	Sid & Andy	C-LL	C2A70D53E1952B6E
2011-12-11	bcp19	NF	no factor TF: 68-69
2011-12-10	David Campeau	NF	no factor TF: 67-68
2004-12-13	mhoney	C-LL	398453CA25922F24
2004-10-03	mhoney	NF-PM1	B1=280000, B2=3500000
2004-06-04	Superbob	NF	no factor TF: 1-67
2001-08-12	Net_Force	NF	no factor TF: 1-56