48 367 097 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 2⁷²

P-1

B1 =	760000
B2 =	760000

Status	Date	User	Residue	Shift	Software
Bad	2010-08-27	James Smith	7ACE2E48A2668552	18016346	Windows,Prime95,v24 final,(aka Wc1)
Verified	2010-11-20	jburkel	92E219C9FD60E4F1	13831027	Windows,Prime95,v25.9,build 4
Verified	2016-08-27	AirSquirrels	92E219C9FD60E4F1	0	clLucas v1.04

History

Date	User	Type	Result
2018-01-01	Sid & Andy	NF	no factor TF: 72-73
2016-08-27	AirSquirrels	C-LL	92E219C9FD60E4F1
2015-08-16	Sid & Andy	NF	no factor TF: 71-72
2015-08-09	Mark Rose	NF	no factor TF: 70-71
2015-07-26	Gordon Spence	NF	no factor TF: 69-70
2010-11-20	jburkel	C-LL	92E219C9FD60E4F1
2010-08-27	James Smith	C-LL	7ACE2E48A2668552
2010-05-19	James Smith	NF-PM1	B1=760000
2008-06-13	Matthias Wurtinger	NF	no factor TF: 1-69
2008-04-24	Wojciech Florek	NF	no factor TF: 1-64
2008-03-03	1997rj7	NF	no factor TF: 1-63
2003-06-06	Thomas Mullen	NF	no factor TF: 1-59