Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

Re: Simple primality testing

by TedYoung (Deacon)
on Nov 22, 2005 at 21:41 UTC ( #510925=note: print w/replies, xml ) Need Help??


in reply to Simple primality testing

My favourite way to test primality is:

sub is_prime { ('1' x shift) !~ /^(11+)\1+$/ }

:-)

Ted Young

($$<<$$=>$$<=>$$<=$$>>$$) always returns 1. :-)

Replies are listed 'Best First'.
Re^2: Simple primality testing
by ambrus (Abbot) on Jun 18, 2009 at 21:06 UTC

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://510925]
help
Chatterbox?
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others studying the Monastery: (4)
As of 2018-07-23 12:18 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    It has been suggested to rename Perl 6 in order to boost its marketing potential. Which name would you prefer?















    Results (465 votes). Check out past polls.

    Notices?