48 151 063 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 =	565000
B2 =	15113750

Status	Date	User	Residue	Shift	Software
Bad	2010-10-08	Ken L.	74E1143344AAD27A	21326743	Windows 64-bit,Prime95,v25.11,build 2
Verified	2011-03-25	linded	0BD580A1D486274B	10558610	Windows Service,Prime95,v25.9,build 4
Verified	2016-08-23	AirSquirrels	0BD580A1D486274B	0	clLucas v1.04

History

Date	User	Type	Result
2017-12-16	Mark Rose	NF	no factor TF: 72-73
2016-08-23	AirSquirrels	C-LL	0BD580A1D486274B
2015-08-16	Sid & Andy	NF	no factor TF: 71-72
2015-08-09	Mark Rose	NF	no factor TF: 70-71
2015-07-24	Sid & Andy	NF	no factor TF: 69-70
2011-03-25	linded	C-LL	0BD580A1D486274B
2010-10-08	Ken L.	C-LL	74E1143344AAD27A
2010-07-15	Ken L.	NF-PM1	B1=565000, B2=15113750
2008-05-10	mrt	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
2003-10-08	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