48 140 119 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	2009-08-04	Choi4KANG	399311F000185471	40402305	Windows,Prime95,v25.7,build 3
Verified	2009-12-10	curtisc	03AB63E8E26D9B0D	43725915	Windows Service,Prime95,v25.8,build 1
Verified	2016-09-01	AirSquirrels	03AB63E8E26D9B0D	46477405	CUDALucas v2.05.1

History

Date	User	Type	Result
2017-12-21	Sid & Andy	NF	no factor TF: 72-73
2016-09-01	AirSquirrels	C-LL	03AB63E8E26D9B0D
2015-08-23	ktony	NF	no factor TF: 71-72
2015-08-23	ktony	NF	no factor TF: 70-71
2015-08-09	Gordon Spence	NF	no factor TF: 69-70
2009-12-10	curtisc	C-LL	03AB63E8E26D9B0D
2009-08-04	Choi4KANG	C-LL	399311F000185471
2008-12-18	Choi4KANG	NF-PM1	B1=760000
2008-05-10	dlsilver	NF	no factor TF: 1-69
2003-12-13	Thomas Mullen	NF	no factor TF: 1-62
2003-10-14	Thomas Mullen	NF	no factor TF: 1-62
2003-09-21	Thomas Mullen	NF	no factor TF: 1-61
2003-06-09	Thomas Mullen	NF	no factor TF: 1-60
2003-06-06	Thomas Mullen	NF	no factor TF: 1-59