48 760 711 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	2011-01-14	S36049	9E65A9898B6BC1B9	32856992	Windows 64-bit,Prime95,v26.4,build 1
Verified	2015-10-18	MadPoo 🙂	0B0B2325152BB809	44480372	Windows 64-bit,Prime95,v26,(aka We4)
Verified	2016-08-21	AirSquirrels	0B0B2325152BB809	27999840	CUDALucas v2.05.1

History

Date	User	Type	Result
2017-12-22	Mark Rose	NF	no factor TF: 72-73
2016-08-21	AirSquirrels	C-LL	0B0B2325152BB809
2015-10-28	1997rj7	NF	no factor TF: 71-72
2015-10-25	Architects Cubed	NF	no factor TF: 70-71
2015-10-18	MadPoo 🙂	C-LL	0B0B2325152BB809
2015-08-31	LaurV	NF	no factor TF: 69-70
2011-01-14	S36049	C-LL	9E65A9898B6BC1B9
2010-03-03	Emmanuel Royer	NF-PM1	B1=565000, B2=15113750, E=6
2008-06-13	JC_Herles	NF	no factor TF: 1-69
2003-06-09	Thomas Mullen	NF	no factor TF: 1-59