20130217, 12:40  #1 
Dec 2009
3^{3} Posts 
PFGW can't find a small factor.
For example,
2362339121*2^10181 has no small factor. mod(2362339121*2^10181, 17) = 0. 
20130218, 00:19  #2 
"Mark"
Apr 2003
Between here and the
5×13×97 Posts 

20130218, 04:01  #3 
Jun 2003
2^{5}×5×31 Posts 

20130218, 04:07  #4 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
9,421 Posts 
Code:
PFGW Version 3.7.2.64BIT.20130122.x86_Dev [GWNUM 27.9] 2362339121*2^10181 is composite: RES64: [3DE9C23DFB42D757] (0.0017s+0.0267s) ... PFGW Version 3.7.3.32BIT.20130210.Win_Dev [GWNUM 27.8] 2362339121*2^10181 is composite: RES64: [3DE9C23DFB42D757] (0.0022s+0.0838s) PFGW Version 3.7.3.64BIT.20130210.Win_Dev [GWNUM 27.8] 2362339121*2^10181 is composite: RES64: [3DE9C23DFB42D757] (0.0020s+0.0295s) Last fiddled with by Batalov on 20130218 at 04:12 
20130218, 07:42  #5 
Banned
"Luigi"
Aug 2002
Team Italia
12CD_{16} Posts 
What is the command line?
pfgw[3264]{s} q2362339121*2^10181 or pfgw[3264]{s} t q2362339121*2^10181 or pfgw[3264]{s} t f q2362339121*2^10181 ? Luigi 
20130218, 08:25  #6 
Jun 2003
2^{5}·5·31 Posts 
I used f q (in windows command line you have to escape the ^ with ^^)

20130218, 10:23  #7 
Dec 2009
11011_{2} Posts 
Open WinPFGW Version 3.6.5.
PFGW Version 20130210. pfgw f o input file.txt 
20130218, 12:43  #8 
"Mark"
Apr 2003
Between here and the
18A1_{16} Posts 
3.6.7 finds the factor, but 3.7.3 does not. I assume it was due to reintroduction of the tree factoring code. I'm getting help from someone much more familiar with that code.

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