25 834 429 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 =	300000
B2 =	6075000

Status	Date	User	Residue	Shift	Software
Verified	2005-09-03	Marco Rocci	12020EF629BCF029	20273878	Linux 32-bit,Prime95,v24 final,(aka Wc2)
Verified	2012-04-25	Dubslow	12020EF629BCF029	0	CUDALucas v2.00a

History

Date	User	Type	Result
2021-08-26	TheJudger	NF	no factor TF: 72-73
2021-08-26	TheJudger	NF	no factor TF: 71-72
2021-07-14	mikr	NF	no factor TF: 70-71
2017-03-28	ramgeis	NF	no factor TF: 69-70
2012-04-25	Dubslow	C-LL	12020EF629BCF029
2011-12-18	bcp19	NF	no factor TF: 68-69
2011-10-14	Dubslow	NF	no factor TF: 67-68
2005-09-03	mrocci	C-LL	12020EF629BCF029
2005-06-19	mrocci	NF-PM1	B1=300000, B2=6075000
2004-10-18	ANONYMOOS	NF	no factor TF: 1-67
2004-09-16	ANONYMOOS	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