How do I convert decimal to hexadecimal in Perl?

Question

How can I convert a number, $d = 1024, in decimal to 0xFF in hex in Perl?

The d variable needs to be assigned to a different variable and b

Answer 1

Caveat: sprintf overflows at 2⁶⁴ ≅ 10¹⁹, on 32-bit even already at only 2³² ≅ 4×10⁹.

For large numbers, enable the lexical pragma bigint. as_hex is documented in Math::BigInt.

use bigint;
my $n = 2**65;
print $n->as_hex;   # '0x20000000000000000'