20160828, 16:49  #1 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
3×5×631 Posts 
September 2016

20160828, 17:46  #2  
"Forget I exist"
Jul 2009
Dumbassville
2^{6}·131 Posts 
Quote:


20160830, 01:34  #3 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
22371_{8} Posts 

20160830, 01:41  #4 
"Forget I exist"
Jul 2009
Dumbassville
2^{6}×131 Posts 

20160830, 01:49  #5 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
10010011111001_{2} Posts 

20160830, 01:57  #6 
Romulan Interpreter
Jun 2011
Thailand
9,547 Posts 
I can solve this problem without any violation if you allow me to be Charlie (no! I don't want to be Bob! No way! ) and hold Alice on my lap, and of course, if she agrees (otherwise it will be a violation...)

20160903, 05:07  #7 
Romulan Interpreter
Jun 2011
Thailand
9,547 Posts 
Dealing with the morning coffee in a wonderful Saturday morning here.
Solved this baby puzzle, less than 20 seconds running time (no cheating). [edit: laptop, single core, not a performant system] [edit: from which 90% is actually printing on the screen, grrrr] Last fiddled with by LaurV on 20160903 at 05:11 
20160903, 15:57  #8 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
3·5·631 Posts 
Pruning the tree works onederfully here, because the answer is such a small number.
If the answer was, say, a two digit number, then much more of the tree would have been to be visited. My program runs for milliseconds (if the bound is set to 20 or 40) and for microseconds (if the bound is set to 2). 
20161004, 14:10  #9 
"Mike"
Aug 2002
8198_{10} Posts 

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