25 888 579 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 2⁷³

TF target 2⁷⁰

P-1

B1 =	305000
B2 =	6938750

Status	Date	User	Residue	Shift	Software
Verified	2006-03-01	Eastern Kentucky University	7A5E5A35AE3F9C50	7304828	Windows,Prime95,v24 final,(aka Wc1)
Verified	2012-04-30	Dubslow	7A5E5A35AE3F9C50	0	CUDALucas v2.00a

History

Date	User	Type	Result
2021-08-26	TheJudger	NF	no factor TF: 72-73
2021-08-26	TheJudger	NF	no factor TF: 71-72
2021-07-18	mikr	NF	no factor TF: 70-71
2012-04-30	Dubslow	C-LL	7A5E5A35AE3F9C50
2011-10-07	David Campeau	NF	no factor TF: 69-70
2011-10-04	David Campeau	NF	no factor TF: 68-69
2011-10-04	David Campeau	NF	no factor TF: 67-68
2006-03-01	-anonymous-	C-LL	7A5E5A35AE3F9C50
2006-02-15	-anonymous-	NF-PM1	B1=305000, B2=6938750
2004-11-30	WorknPlay	NF	no factor TF: 1-67
2004-11-22	WorknPlay	NF	no factor TF: 1-67
2004-04-29	dave_0273	NF	no factor TF: 1-62
2001-08-12	Net_Force	NF	no factor TF: 1-56