25 981 601 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 =	285000
B2 =	3633750

Status	Date	User	Residue	Shift	Software
Verified	2004-11-03	Johan Piscator	F3C7BC7E73261DDE	17349883	Windows,Prime95,v23,(aka WZ1)
Verified	2012-04-24	Dubslow	F3C7BC7E73261DDE	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
2021-08-26	TheJudger	NF	no factor TF: 72-73
2021-08-26	TheJudger	NF	no factor TF: 71-72
2021-07-25	mikr	NF	no factor TF: 70-71
2017-03-31	ramgeis	NF	no factor TF: 69-70
2012-04-24	Dubslow	C-LL	F3C7BC7E73261DDE
2011-12-22	bcp19	NF	no factor TF: 68-69
2011-12-17	David Campeau	NF	no factor TF: 67-68
2004-11-03	-anonymous-	C-LL	F3C7BC7E73261DDE
2004-10-03	-anonymous-	NF-PM1	B1=285000, B2=3633750
2004-07-02	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