20120917, 23:23  #1  
Einyen
Dec 2003
Denmark
3,037 Posts 
Output bug in mmff
Ops I thought this was a typo on http://www.prothsearch.net/fermat.html but instead it seems to be a bug in mmff:
Quote:
Can someone correct the title of the thread? Last fiddled with by ATH on 20120917 at 23:47 

20120917, 23:52  #2  
Einyen
Dec 2003
Denmark
3,037 Posts 
Found a third one:
Quote:


20120918, 01:43  #3  
"Robert Gerbicz"
Oct 2005
Hungary
5·17^{2} Posts 
Quote:
Last fiddled with by R. Gerbicz on 20120918 at 01:46 

20120918, 02:11  #4 
Einyen
Dec 2003
Denmark
3,037 Posts 
I checked all larger factors. The program only support n>27 and n<160 and only support k>= 2^{24} or larger, depends a bit on the n and m I think. I checked all factors I can get the program to work with, which was 29<=n<=149 and most of the factors with k>10^{7}.
Last fiddled with by ATH on 20120918 at 02:12 
20120918, 02:52  #5 
Romulan Interpreter
Jun 2011
Thailand
5^{2}·7·53 Posts 
At least, is a very good sign that it finds them (for n>m2, if we name Fm and k*2^n+1, I wondered if it will find factors if n>m2 strictly).
(stupid question: are the third a new factor, or you tested to see if it refinds an older factor?) edit: @Gerbicz: I hope you wanted to be ironical. This is not a serious bug, as long as we have the right k, finding n is piece of cake... and about the program having the factors in a table, are you implying that George is a charlatan or what? I really hope you just joked! Last fiddled with by LaurV on 20120918 at 02:55 
20120918, 03:04  #6 
P90 years forever!
Aug 2002
Yeehaw, FL
1110011000010_{2} Posts 
This is almost certainly a bug in the aptly named "dumb num" routines in tf_validate.h

20120918, 03:56  #7 
P90 years forever!
Aug 2002
Yeehaw, FL
2·3^{2}·409 Posts 
dumb num fixed in 0.24. If you find a new Fermat factor in 0.23 and earlier, we'll need to verify which Fermat number the factor really divides.

20120918, 15:47  #8 
"Jerry"
Nov 2011
Vancouver, WA
1,123 Posts 

20120918, 15:57  #9 
P90 years forever!
Aug 2002
Yeehaw, FL
2·3^{2}·409 Posts 

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