37 518 671 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 2⁷¹

P-1

B1 =	400000
B2 =	12000000

Status	Date	User	Residue	Shift	Software
Verified	2007-09-13	C. Cooper / S. Boone	415485AC5EF62FF8	32196663	Windows,Prime95,v24 final,NT service,(aka Wc5)
Verified	2016-09-06	Dubslow	415485AC5EF62FF8	4290974	Linux 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2022-05-21	Sid & Andy	NF	no factor TF: 72-73
2022-05-21	Sid & Andy	NF	no factor TF: 71-72
2016-09-06	Dubslow	C-LL	415485AC5EF62FF8
2016-03-08	HBendtz	NF-PM1	B1=400000, B2=12000000, E=12
2014-03-02	Jerry Hallett	NF	no factor TF: 70-71
2013-11-24	bayanne	NF	no factor TF: 69-70
2013-07-15	Norman Ley	NF	no factor TF: 68-69
2012-04-23	america64	NF	no factor TF: 67-68
2007-09-13	curtisc	C-LL	415485AC5EF62FF8
2007-07-24	curtisc	NF-PM1	B1=655000
2006-04-28	-anonymous-	NF	no factor TF: 1-67