#!perl
use strict ;
use warnings;
use Math::BigInt ;
my $bignum = Math::BigInt->new('1111111111111111111111111');
$bignum->as_hex();
print $bignum ;


##</code><code>##

Can't locate object method "as_hex" via package "Math::BigInt" (perhaps you forgot to load "Math::BigInt"?) at t.pl line 6.