By summing periodic digits, one can obtain an algebraic form for this number.
It will be relatively short.

Thank you [B]CRGreathouse [/B]for the link


[QUOTE=paulunderwood;430968][url]http://www.primenumbers.net/prptop/prptop.php?page=40#haut[/url]

You can enter "page" beyond "40", so that the actual lower limit is now 20k digits for submissions. :smile:[/QUOTE]

Thank you [B]CRGreathouse [/B]for the link.

That would make to OP eligible, wouldn't it?:surprised:

I have 20K+ PRP's of my own to submit, but what's the point of asking for a minimum of 20k , when 10kth rank is 40K+?:exclaim:

And why not have an input for expanded digits like the top 5000 Primes.

[QUOTE=a1call;430997]I have 20K+ PRP's of my own to submit, but what's the point of asking for a minimum of 20k , when 10kth rank is 40K+?:exclaim:

And why not have an input for expanded digits like the top 5000 Primes.[/QUOTE]
First of all, you can look at any page. Just type the page number in the URL, e.g. here is [URL="http://www.primenumbers.net/prptop/prptop.php?page=150#haut"]page 150[/URL]

Second, most people use PRPtop not for boasting that they have a PRP on page 77, but to do cross-sectional search. For example, I know many x^y+y^x (PR)primes, but are there and x^y-y^x (PR)primes? Of course, yes, the whole [URL="http://www.primenumbers.net/prptop/searchform.php?form=x^y-y^x&action=Search"]1000+ a few of them[/URL]!
How about some multiply-and-add primes, say looking like "(((((?+3?)?" - [URL="http://www.primenumbers.net/prptop/searchform.php?form=%28%28%28%28%28%3F%2B3%3F%29%3F&action=Search"]yes, there are these, too[/URL].

Thank you for the insight, [B]Batalov[/B].


[QUOTE=Batalov;430998]How about some multiply-and-add primes, say looking like "(((((?+3?)?" - [URL="http://www.primenumbers.net/prptop/searchform.php?form=%28%28%28%28%28%3F%2B3%3F%29%3F&action=Search"]yes, there are these, too[/URL].[/QUOTE]
Now you know, I like those.:smile: