49 126 907 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 2⁷³

P-1

B1 =	575000
B2 =	16100000

Status	Date	User	Residue	Shift	Software
Verified	2011-02-21	Kyle Z Schmidt	5530ED48C92CD625	4861252	Windows 64-bit,Prime95,v25.11,build 2
Verified	2018-08-21	Joel	5530ED48C92CD625	34225590	Windows 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2018-08-21	Joel	C-LL	5530ED48C92CD625
2017-09-21	-anonymous-	NF	no factor TF: 72-73
2015-11-21	-anonymous-	NF	no factor TF: 71-72
2015-09-08	LaurV	NF	no factor TF: 70-71
2015-08-27	Architects Cubed	NF	no factor TF: 69-70
2011-02-21	Kyle Z Schmidt	C-LL	5530ED48C92CD625
2009-04-22	Roman Maznichenko	NF-PM1	B1=575000, B2=16100000, E=6
2008-07-04	precius1	NF	no factor TF: 1-69
2008-06-03	-anonymous-	NF	no factor TF: 1-64
2007-06-15	1997rj7	NF	no factor TF: 1-63
2003-09-29	Team Prime Rib	NF	no factor TF: 1-59