25 606 111 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	2004-10-03	Lei Zhou	EC9600E5B3184995	5838219	Linux 32-bit,Prime95,v23,(aka WZ2)
Verified	2012-05-23	Dubslow	EC9600E5B3184995	4137849	Linux 64-bit,Prime95,v27.7,build 1

History

Date	User	Type	Result
2021-11-16	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
2021-06-29	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
2012-05-23	Dubslow	C-LL	EC9600E5B3184995
2004-10-10	-anonymous-	NF	no factor TF: 1-67
2004-10-03	Lei Zhou	C-LL	EC9600E5B3184995
2004-09-02	Lei Zhou	NF-PM1	B1=380000
2004-04-20	-anonymous-	NF	no factor TF: 1-62
2001-08-12	Net_Force	NF	no factor TF: 1-56