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Old 2012-09-01, 23:07   #9
Walter Nissen
 
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Nov 2006
Terra

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Question

http://www.mersenneforum.org/showthr...=11615&page=11
contains some informative messages from akruppa .

The depth of my ignorance is such that I can't cite an example with
specific digit sizes .
So , I'll just make some up , which may be suitable , or not .
I wouldn't expect optimal B1's to have the same effectiveness in
finding p38's as p39's .
Nor p39's as p40's .
But it's not immediately apparent to me why the change in
effectiveness from p38 to p39 might change in a different direction
compared to that from p39 to p40 .

Would we expect the same if instead of focusing on digit sizes of
20 , 25 , 30 , etc. , attention were paid to 20.5 , 25.5 , 30.5 ,
etc. ?
Or 24.6 , 29.6 , 34.6 , etc. ?
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