33 604 253 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 =	200000
B2 =	4250000

Status	Date	User	Residue	Shift	Software
Verified	2004-03-26	Anatole Kaushanski	5D3AEEC931CEF40B	20879537	Windows,Prime95,v23,(aka WZ1)
Verified	2014-09-29	Massimo Cappelli (ik5pwa)	5D3AEEC931CEF40B	6878592	Linux 64-bit,Prime95,v28.5,build 2

History

Date	User	Type	Result
2020-04-19	-anonymous-	NF	no factor TF: 73-74
2019-12-26	-anonymous-	NF	no factor TF: 71-72
2019-12-26	-anonymous-	NF	no factor TF: 72-73
2016-02-23	Mark Rose	NF	no factor TF: 1-64
2014-09-29	Massimo Cappelli (ik5pwa)	C-LL	5D3AEEC931CEF40B
2014-04-09	axn	NF	no factor TF: 70-71
2012-09-03	Patrik Johansson	NF	no factor TF: 68-70
2010-07-16	GrunwalderGIMP	NF	no factor TF: 67-68
2009-12-01	Carsten Kossendey	NF-PM1	B1=200000, B2=4250000, E=6
2008-11-26	Carsten Kossendey	NF	no factor TF: 66-67
2008-11-26	Carsten Kossendey	NF	no factor TF: 65-66
2008-11-26	Carsten Kossendey	NF	no factor TF: 64-65
2004-03-26	-anonymous-	C-LL	5D3AEEC931CEF40B