25 816 027 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 =	310000
B2 =	7827500

Status	Date	User	Residue	Shift	Software
Bad	2005-02-02	David J. Stucki	906C0B52744432D6	515700	Windows,Prime95,v22,NT service,(aka WY5)
Verified	2012-03-05	Sid & Andy	07C0E9F3652C8315	23678431	Windows 64-bit,Prime95,v26.3,build 3
Verified	2012-05-27	Dubslow	07C0E9F3652C8315	0	CUDALucas v2.01a
Verified	2012-07-30	lexatref	07C0E9F3652C8315	7223111	Windows,Prime95,v25.9,build 4

History

Date	User	Type	Result
2024-05-13	James Heinrich	NF	no factor TF: 68-69
2021-08-26	TheJudger	NF	no factor TF: 72-73
2021-08-26	TheJudger	NF	no factor TF: 71-72
2021-07-13	mikr	NF	no factor TF: 70-71
2017-03-28	ramgeis	NF	no factor TF: 69-70
2012-07-30	lexatref	C-LL	07C0E9F3652C8315
2012-05-27	Dubslow	C-LL	07C0E9F3652C8315
2012-03-05	Sid & Andy	C-LL	07C0E9F3652C8315
2012-01-02	Carsten Kossendey	NF	no factor TF: 68-69
2011-10-11	Carsten Kossendey	NF	no factor TF: 67-68
2005-08-01	-anonymous-	NF	no factor TF: 1-67
2005-02-12	-anonymous-	NF	no factor TF: 1-62
2005-02-02	David J. Stucki	C-LL	906C0B52744432D6
2005-01-20	-anonymous-	NF	no factor TF: 1-62
2005-01-10	David J. Stucki	NF-PM1	B1=310000, B2=7827500
2004-07-02	-anonymous-	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