25 207 817 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 =	290000
B2 =	6017500

Status	Date	User	Residue	Shift	Software
Verified	2004-11-03	Dodo Ivanecky	D6C05F9D30E749BF	13984451	Linux 32-bit,Prime95,v23,(aka WZ2)
Verified	2012-01-01	Dubslow	D6C05F9D30E749BF	15215622	Windows 64-bit,Prime95,v26.6,build 3

History

Date	User	Type	Result
2021-01-09	-anonymous-	NF	no factor TF: 72-73
2021-01-08	-anonymous-	NF	no factor TF: 70-71
2021-01-08	-anonymous-	NF	no factor TF: 71-72
2017-03-19	ramgeis	NF	no factor TF: 69-70
2012-01-01	Dubslow	C-LL	D6C05F9D30E749BF
2011-11-23	LaurV	NF	no factor TF: 68-69
2011-11-23	LaurV	NF	no factor TF: 67-68
2004-11-03	-anonymous-	C-LL	D6C05F9D30E749BF
2004-10-18	-anonymous-	NF-PM1	B1=290000, B2=6017500, E=6
2004-04-09	-anonymous-	NF	no factor TF: 1-67
2003-12-31	markr	NF	no factor TF: 1-62
2001-08-24	Matt	NF	no factor TF: 1-58
2001-08-12	Net_Force	NF	no factor TF: 1-56