The problem is that the number is too big to be represented as a 32 bit integer and your Perl has been compiled to use 32 bit integers.

For positive integers you can use:

use strict;
use warnings;
use bigint;

my $num = 24600988483;
my @parts;

while ($num) {
    unshift @parts, $num & 0xFFFFFFFF;
    $num /= 0x100000000;
}

printf "%x", $_ for @parts;

[download]

Prints:

5ba554b43

[download]

Update: jettero's solution is much cleaner!

Update: Unstruck on advice ;)

DWIM is Perl's answer to Gödel

In reply to Re: String to Hex by GrandFather
in thread String to Hex by augustpete

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