All the primes up to 100: 
use strict;
use warnings;

my (@prime, $p, $limit) = 2;
PRIME:
for $p (3..100) {
    $limit = int sqrt($p);
    for (@prime) {
        last if $_ > $limit;
        next PRIME if $p % $_ == 0;
    }
    push @prime, $p;
}

[download]
Or alternately, the first 100 primes: 
use strict;
use warnings;

my ($max, $p, @prime, $limit) = (100, 2, 2);
PRIME:
while (1) {
    $limit = int sqrt(++$p);
    for (@prime) {
        last if $_ > $limit;
        next PRIME if $p % $_ == 0;
    }
    push @prime, $p;
    last if $max == $#prime + 1;
}

[download]

In reply to Re: Easy way to list prime numbers 1 to 100 by TedPride
in thread Easy way to list prime numbers 1 to 100 by l.frankline

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