25 605 589 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 =	450000
B2 =	8000000

Status	Date	User	Residue	Shift	Software
Verified	2004-11-03	C. Cooper / S. Boone	223E47C7A16D9350	9603879	Windows,Prime95,v23,NT service,(aka WZ5)
Verified	2012-05-21	Dubslow	223E47C7A16D9350	13004116	Linux 64-bit,Prime95,v27.7,build 1

History

Date	User	Type	Result
2021-11-14	ixfd64	NF-PM1	B1=450000, B2=8000000
2021-08-03	Sid & Andy	NF	no factor TF: 71-72
2021-08-03	Sid & Andy	NF	no factor TF: 72-73
2021-06-28	mikr	NF	no factor TF: 70-71
2017-06-08	ramgeis	NF	no factor TF: 68-69
2017-06-08	ramgeis	NF	no factor TF: 69-70
2016-02-08	VictordeHollander	NF	no factor TF: 67-68
2012-05-21	Dubslow	C-LL	223E47C7A16D9350
2004-11-03	curtisc	C-LL	223E47C7A16D9350
2004-09-16	curtisc	NF-PM1	B1=380000
2004-05-15	-anonymous-	NF	no factor TF: 1-67
2004-04-20	-anonymous-	NF	no factor TF: 1-62
2001-08-12	Net_Force	NF	no factor TF: 1-56