37 955 527 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 2⁷⁴

TF target 2⁷¹

P-1

B1 =	840000
B2 =	21000000

Status	Date	User	Residue	Shift	Software
Verified	2008-03-05	Alexandr Fomin	CBB74C29F42E66AC	17393451	Windows,Prime95,v24 final,NT service,(aka Wc5)
Verified	2016-10-30	Dubslow	CBB74C29F42E66AC	2923278	Linux 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2024-05-26	LaurV	NF	no factor TF: 68-69
2016-10-30	Dubslow	C-LL	CBB74C29F42E66AC
2016-10-24	Bruno Victal	NF-PM1	B1=840000, B2=21000000, E=12
2016-10-24	Bruno Victal	NF	no factor TF: 73-74
2016-10-24	Bruno Victal	NF	no factor TF: 72-73
2016-10-24	Bruno Victal	NF	no factor TF: 71-72
2014-04-06	Jerry Hallett	NF	no factor TF: 69-70
2014-04-06	Jerry Hallett	NF	no factor TF: 70-71
2013-08-30	Carsten Kossendey	NF	no factor TF: 68-69
2008-03-03	-anonymous-	C-LL	CBB74C29F42E66AC
2007-03-20	-anonymous-	NF-PM1	B1=455000, B2=12626250
2006-07-10	marnes	NF	no factor TF: 1-68