25 866 773 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 =	980000
B2 =	57408000

Status	Date	User	Residue	Shift	Software
Bad	2007-02-20	C. Cooper / S. Boone	1893D887A43C120E	331194	Windows,Prime95,v23,NT service,(aka WZ5)
Bad	2011-03-13	-anonymous-	8EB6E06A00D9CD2B	19412948	Windows,Prime95,v25.11,build 2
Verified	2012-02-17	spradlin	DA5D66E951B771AF	6397378	Linux 64-bit,Prime95,v26.6,build 3
Verified	2012-06-04	Dubslow	DA5D66E951B771AF	0	CUDALucas v2.02
Verified	2012-06-15	lexatref	DA5D66E951B771AF	24927013	Windows,Prime95,v25.9,build 4

History

Date	User	Type	Result
2021-09-06	RichD0	NF-PM1	B1=980000, B2=57408000
2021-08-26	TheJudger	NF	no factor TF: 72-73
2021-08-26	TheJudger	NF	no factor TF: 71-72
2021-07-16	mikr	NF	no factor TF: 70-71
2017-03-28	ramgeis	NF	no factor TF: 69-70
2012-06-15	lexatref	C-LL	DA5D66E951B771AF
2012-06-04	Dubslow	C-LL	DA5D66E951B771AF
2012-05-22	bcp19	NF	no factor TF: 68-69
2012-02-17	spradlin	C-LL	DA5D66E951B771AF
2011-10-15	Dubslow	NF	no factor TF: 67-68
2011-03-13	-anonymous-	C-LL	8EB6E06A00D9CD2B
2007-02-20	curtisc	C-LL	1893D887A43C120E
2004-10-03	-anonymous-	NF-PM1	B1=385000
2004-06-12	-anonymous-	NF	no factor TF: 1-67
2004-04-29	1997rj7	NF	no factor TF: 1-62
2001-08-12	Net_Force	NF	no factor TF: 1-56