25 446 233 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 =	280000
B2 =	3500000

Status	Date	User	Residue	Shift	Software
Verified	2004-10-03	Del Johnson	E5CB0FAAB9504C1B	14811158	Windows,Prime95,v23,(aka WZ1)
Verified	2012-05-06	Dubslow	E5CB0FAAB9504C1B	17620723	Linux 64-bit,Prime95,v27.7,build 1

History

Date	User	Type	Result
2021-10-17	TheJudger	NF	no factor TF: 74-75
2021-09-30	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
2021-06-18	mikr	NF	no factor TF: 70-71
2017-03-22	ramgeis	NF	no factor TF: 69-70
2012-05-06	Dubslow	C-LL	E5CB0FAAB9504C1B
2011-09-14	David Campeau	NF	no factor TF: 68-69
2011-09-13	David Campeau	NF	no factor TF: 67-68
2004-10-03	Del Johnson	C-LL	E5CB0FAAB9504C1B
2004-08-20	Del Johnson	NF-PM1	B1=280000, B2=3500000
2004-05-11	Team Prime Rib	NF	no factor TF: 1-67
2001-11-03	Matt	NF	no factor TF: 1-58
2001-09-30	Matt	NF	no factor TF: 1-58
2001-08-12	Net_Force	NF	no factor TF: 1-56