25 574 683 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 =	300000
B2 =	6075000

Status	Date	User	Residue	Shift	Software
Verified	2004-10-03	Robert Walker	B93B8AC8DDBDBF6E	11970960	Windows,Prime95,v23,(aka WZ1)
Verified	2012-06-10	Dubslow	B93B8AC8DDBDBF6E	12257904	Linux 64-bit,Prime95,v27.7,build 2

History

Date	User	Type	Result
2021-08-28	TheJudger	NF	no factor TF: 72-73
2021-08-28	TheJudger	NF	no factor TF: 71-72
2021-06-27	mikr	NF	no factor TF: 70-71
2017-03-23	ramgeis	NF	no factor TF: 69-70
2012-06-10	Dubslow	C-LL	B93B8AC8DDBDBF6E
2011-10-11	David Campeau	NF	no factor TF: 68-69
2011-10-10	Dubslow	NF	no factor TF: 67-68
2004-10-03	Robert Walker	C-LL	B93B8AC8DDBDBF6E
2004-09-16	Robert Walker	NF-PM1	B1=300000, B2=6075000
2004-08-20	arnaud	NF	no factor TF: 1-67
2004-04-29	-anonymous-	NF	no factor TF: 1-62
2001-08-12	Net_Force	NF	no factor TF: 1-56