48 044 081 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 =	540000
B2 =	10260000

Status	Date	User	Residue	Shift	Software
Bad	2009-04-27	Viktor Kosmowski	6AC842695AD797A3	16049788	Windows,Prime95,v25.8,build 5
Verified	2010-08-22	Aerofluidics, LLC	78171FCC4C35CED8	40869100	Linux 64-bit,Prime95,v25.9,build 4
Verified	2016-08-22	AirSquirrels	78171FCC4C35CED8	0	clLucas v1.04

History

Date	User	Type	Result
2017-12-15	Mark Rose	NF	no factor TF: 72-73
2016-08-22	AirSquirrels	C-LL	78171FCC4C35CED8
2015-08-16	Sid & Andy	NF	no factor TF: 71-72
2015-08-09	Mark Rose	NF	no factor TF: 70-71
2015-07-25	Sid & Andy	NF	no factor TF: 69-70
2010-08-22	Aerofluidics, LLC	C-LL	78171FCC4C35CED8
2009-04-27	Viktor Kosmowski	C-LL	6AC842695AD797A3
2008-12-20	Viktor Kosmowski	NF-PM1	B1=540000, B2=10260000
2008-04-24	S36049	NF	no factor TF: 1-69
2003-10-08	Thomas Mullen	NF	no factor TF: 1-60
2003-06-09	Thomas Mullen	NF	no factor TF: 1-59