$ perl 1222321.pl
3243BCFE21EF4468
EF453276BDBDE566
2342ED65876AB55F
$ perl -v | head -3

This is perl 5, version 20, subversion 3 (v5.20.3) built for x86_64-linux-thread-multi
(with 16 registered patches, see perl -V for more detail)
$ pmv Math::BigInt
1.9993