49 632 463 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 2⁷⁶

TF target 2⁷³

P-1

B1 =	580000
B2 =	15950000

Status	Date	User	Residue	Shift	Software
Bad	2011-01-03	S36049	4DDF13A6AA7DED33	18191848	Windows 64-bit,Prime95,v26.4,build 1
Verified	2015-10-18	MadPoo 🙂	95DA690BBD19C866	32486429	Windows 64-bit,Prime95,v26,(aka We4)
Verified	2016-09-09	endless_mike	95DA690BBD19C866	35967951	Linux 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2021-10-18	Anton Repko	NF	no factor TF: 75-76
2021-08-26	Sid & Andy	NF	no factor TF: 74-75
2019-01-05	-anonymous-	NF	no factor TF: 73-74
2017-09-11	Sid & Andy	NF	no factor TF: 72-73
2016-09-09	endless_mike	C-LL	95DA690BBD19C866
2015-10-25	Architects Cubed	NF	no factor TF: 71-72
2015-10-25	Greg	NF	no factor TF: 70-71
2015-10-18	MadPoo 🙂	C-LL	95DA690BBD19C866
2015-07-18	Gordon Spence	NF	no factor TF: 69-70
2011-01-03	S36049	C-LL	4DDF13A6AA7DED33
2010-02-15	MCAS	NF-PM1	B1=580000, B2=15950000
2008-08-26	RMAC9.5	NF	no factor TF: 1-69
2007-07-24	1997rj7	NF	no factor TF: 1-63
2003-12-31	Team Prime Rib	NF	no factor TF: 1-59
2001-01-21	Joss	NF	no factor TF: 1-52