N. B. Perl 6 has been renamed to Raku.
Click to read more.
In October 2019, Perl 6 has been renamed to Raku. Its grammar, syntax, sigils, and everything remain the same, but when reading this article, please read Perl 6 as Raku.
You are reading the article written before the rename. What is said here, most likely still works, but you may want considering to review the differences after the rename. The texts published on this site prior to the rename will stay unchanged for reflecting the historical truth.
lcm finds the least common multiple value for the given operands.