20160828, 16:49  #1 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
10010011010010_{2} 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
9426_{10} 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
24D2_{16} Posts 

20160830, 01:57  #6 
Romulan Interpreter
Jun 2011
Thailand
10010011100101_{2} 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
9445_{10} 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
2×3×1,571 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
3^{2}×907 Posts 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
September 2017  R. Gerbicz  Puzzles  21  20180317 13:19 
A Desperate appeal! (by Richard K. Guy)... deadline is September 30, 2016  philmoore  Factoring  102  20161001 12:16 
September 2015  Xyzzy  Puzzles  12  20151007 14:43 
September 2014  Xyzzy  Puzzles  3  20141102 19:04 
Anyone going to Vienna in September?  fivemack  Factoring  1  20070907 00:29 