25 646 837 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 =	1002000
B2 =	56348000

Status	Date	User	Residue	Shift	Software
Bad	2004-10-18	Frank Supperl	A70C7A4D7C5E818D	6441540	Windows,Prime95,v23,(aka WZ1)
Verified	2010-10-15	linded	F55B77FF0C3EA3FA	22402111	Windows,Prime95,v25.7,build 3
Bad	2012-05-09	Dubslow	761E17DC8A087ED0	6367855	Linux 64-bit,Prime95,v27.7,build 1
Verified	2012-06-07	spradlin	F55B77FF0C3EA3FA	15394896	Linux 64-bit,Prime95,v27.7,build 2

History

Date	User	Type	Result
2021-08-07	Architects Cubed	NF-PM1	B1=1002000, B2=56348000
2021-07-30	Sid & Andy	NF	no factor TF: 71-72
2021-07-30	Sid & Andy	NF	no factor TF: 72-73
2021-07-03	mikr	NF	no factor TF: 70-71
2017-06-20	ramgeis	NF	no factor TF: 68-69
2017-06-20	ramgeis	NF	no factor TF: 69-70
2012-06-07	spradlin	C-LL	F55B77FF0C3EA3FA
2012-05-09	Dubslow	C-LL	761E17DC8A087ED0
2011-10-26	David Campeau	NF	no factor TF: 67-68
2010-10-15	linded	C-LL	F55B77FF0C3EA3FA
2004-10-18	-anonymous-	C-LL	A70C7A4D7C5E818D
2004-09-16	-anonymous-	NF-PM1	B1=380000
2004-05-25	Marzbug	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