Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
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?
[Discipulus]: Tanktalus my comment was about how to fork & join in tk?
[marioroy]: Oh, I've might of missed Discipulus's earlier response. I had gone to bed.
[Tanktalus]: ah, I don't even have the perlmonks site open in my browser :)
Tanktalus is chatting through his cbstats application :)
[marioroy]: Perl is so much fun.
[Discipulus]: Tanktalus i recently started a Meditation about marioroy's MCE suit of modules, but is even better to see a practical question answered than responses to my meditation
[Discipulus]: good night mario!
[Tanktalus]: yeah, I saw you post about MCE - the concept looks really really cool. I wonder how well it plays with Coro :)
[Lady_Aleena]: Hi guys. I asked this earlier but got no answer. Why is this dying at -exec: my @music_times = qx(find ~/Music/Albums/ -type f -iname '*.mp3' -exec mp3info -p "%S\n" {} \;);
[Lady_Aleena]: The error find: missing argument to `-exec'

How do I use this? | Other CB clients
Other Users?
Others chilling in the Monastery: (5)
As of 2017-04-23 19:53 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    I'm a fool:











    Results (432 votes). Check out past polls.