33 640 153 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 =	380000
B2 =	7600000

Status	Date	User	Residue	Shift	Software
Verified	2004-10-03	James Rose	56DF3B15D6E7B9EC	33195755	Windows,Prime95,v23,(aka WZ1)
Verified	2014-12-17	Dubslow	56DF3B15D6E7B9EC	17930831	Linux 64-bit,Prime95,v28.5,build 2

History

Date	User	Type	Result
2024-05-21	James Heinrich	NF	no factor TF: 68-69
2020-04-18	-anonymous-	NF	no factor TF: 73-74
2019-12-27	-anonymous-	NF	no factor TF: 72-73
2019-12-27	-anonymous-	NF	no factor TF: 71-72
2014-12-17	Dubslow	C-LL	56DF3B15D6E7B9EC
2013-05-25	GrunwalderGIMP	NF	no factor TF: 70-71
2013-05-18	Numberwang	NF	no factor TF: 69-70
2012-12-06	Carsten Kossendey	NF	no factor TF: 68-69
2004-10-03	-anonymous-	C-LL	56DF3B15D6E7B9EC
2004-04-09	-anonymous-	NF-PM1	B1=380000, B2=7600000
2004-03-26	-anonymous-	NF	no factor TF: 1-68
2003-09-09	markr	NF	no factor TF: 1-64
2003-07-06	markr	NF	no factor TF: 1-63