33 640 151 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 =	350000
B2 =	4200000

Status	Date	User	Residue	Shift	Software
Verified	2004-02-07	Andrew Shafer	C4B3E56C00004B08	19011917	Windows,Prime95,v23,(aka WZ1)
Verified	2014-12-17	Dubslow	C4B3E56C00004B08	10705541	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: 71-72
2019-12-27	-anonymous-	NF	no factor TF: 72-73
2014-12-17	Dubslow	C-LL	C4B3E56C00004B08
2013-02-10	bcp19	NF	no factor TF: 70-71
2013-02-10	bcp19	NF	no factor TF: 69-70
2012-12-06	Carsten Kossendey	NF	no factor TF: 68-69
2004-02-07	-anonymous-	C-LL	C4B3E56C00004B08
2003-12-02	-anonymous-	NF-PM1	B1=350000, B2=4200000
2003-11-28	-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