use Math::BigInt; $i = Math::BigInt->new($string); use Math::BigInt ':constant'; print 2**200;
This prints:
+1606938044258990275541962092341162602522202993782792835301376
The Math::BigInt
module provides objects that
represent integers with arbitrary precision and overloaded
arithmetical operators. Create these objects using the
new
constructor, or, within a lexical scope, by
importing the special value ":constant
", after
which all numeric literals through the end of that lexical scope are
treated as Math::BigInt
objects. All standard
integer operators are implemented, including (as of the 5.6 release of
Perl) the bitwise logical operators. Under the current implementation,
this module is not what you'd call blazingly fast, but this may be
addressed in the future. (We'd like to see you how fast
you are at calculating 2**200
in your head.)