libmath-gmp-perl | high speed arbitrary size integer math for perl | Mehr ...
Math::GMP was designed to be a drop-in replacement both for Math::BigInt and for regular integer arithmetic. Unlike BigInt, though, Math::GMP uses the GNU gmp library for all of its calculations, as opposed to straight Perl functions. This can result in speed improvements. . The downside is that this module is not 100% compatible to Math::BigInt.
