45 921 637 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 =	780000
B2 =	780000

Status	Date	User	Residue	Shift	Software
Bad	2009-03-23	curtisc	86D53729F765129D	19964538	Windows Service,Prime95,v25.8,build 1
Verified	2016-01-13	MadPoo 🙂	62531F35F0A6C4D0	43742458	Windows 64-bit,Prime95,v26,(aka We4)
Verified	2016-06-12	AirSquirrels	62531F35F0A6C4D0	0	clLucas v1.04

History

Date	User	Type	Result
2018-02-23	-anonymous-	NF	no factor TF: 72-73
2016-06-12	AirSquirrels	C-LL	62531F35F0A6C4D0
2016-01-13	MadPoo 🙂	C-LL	62531F35F0A6C4D0
2015-08-17	tigreroars	NF	no factor TF: 71-72
2015-08-17	tigreroars	NF	no factor TF: 70-71
2015-06-06	Ethan O'Connor	NF	no factor TF: 69-70
2014-08-19	VictordeHollander	NF	no factor TF: 68-69
2009-03-23	curtisc	C-LL	86D53729F765129D
2009-02-02	curtisc	NF-PM1	B1=780000
2008-03-11	S485122	NF	no factor TF: 1-68
2007-04-23	1997rj7	NF	no factor TF: 1-63