Modular Prime

use Strict;
use Warnings;

open PRIME_LIST, ">", "./prime_list.txt"
  or die "Failed to open ./prime_list.txt\nError: $!";

my @primes;

sub list_primes {
  local $max = shift;
  for (local $num = 2; $num < $max; $num++) {
    for (local $x = 2; $x <= $num/2; $x++) {
      if ($num % $x == 0) {
        $x = 2;
        $num++;
      }
    }
    push @primes, $num;
  }
}

list_primes($ARGV[0]);

print "$_\t" foreach @primes;
print "\n";

my $value = 0;
my @decimal_value;

foreach my $base (@primes) {
  for ($x = 0; $x < scalar @primes; $x++) {
    $value += ($primes[$x] % $base) * $base**($x);
  }
  
  print PRIME_LIST "$base\t$value\n";
  push @decimal_value, $value;
  $value = 0;
  
}

print "done."