I have not had problems with Perl handling large numbers. I had written a program for multiplying very large prime numbers together (a bit of cracking). The results were up to 12 digits long. 

open (FILE, 'pout.txt') || die "Could not open output:\n $!\n";
$i = 0;
while (<FILE>){
    chomp($_);
    ($key, $prime) =split (/ /, $_);
    push (@prime, $prime);
}    
$nop = @prime;
print "$nop primes found.\n";
$i = 0;
until ( $i == 1) {
    print "Enter First Key\: ";
    $key1 = <STDIN>;
    chomp ($key1);
    print "Enter Second Key\: ";
    $key2 = <STDIN>;
    chomp ($key2);
    $total = (@prime[$key1] * @prime[$key2]);
    print "@prime[$key1] times @prime[$key2] is $total\n";
}

[download]
 This code takes my file with a key ordered list of prime numbers and pushes each prime onto @prime. It then asks the user to specify to keys to multiply together and prints the result. I was about to handle some very large numbers with this.

Sparky

In reply to Re: perls long number problem by sparkyichi
in thread perls long number problem by toadi

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