25 791 307 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 2⁷⁵

TF target 2⁷⁰

P-1

B1 =	300000
B2 =	6075000

Status	Date	User	Residue	Shift	Software
Verified	2006-07-10	Martin Klestinez	0CBF1873B26A5773	20719764	Windows,Prime95,v23,(aka WZ1)
Verified	2012-05-25	Dubslow	0CBF1873B26A5773	0	CUDALucas v2.00a

History

Date	User	Type	Result
2021-10-17	TheJudger	NF	no factor TF: 74-75
2021-09-19	TheJudger	NF	no factor TF: 73-74
2021-08-28	TheJudger	NF	no factor TF: 72-73
2021-08-28	TheJudger	NF	no factor TF: 71-72
2021-07-12	mikr	NF	no factor TF: 70-71
2017-03-26	ramgeis	NF	no factor TF: 69-70
2012-05-25	Dubslow	C-LL	0CBF1873B26A5773
2012-05-21	Jerry Hallett	NF	no factor TF: 68-69
2012-05-20	Jerry Hallett	NF	no factor TF: 67-68
2006-07-10	-anonymous-	C-LL	0CBF1873B26A5773
2006-06-13	-anonymous-	NF-PM1	B1=300000, B2=6075000
2004-06-04	-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