Originally written not by me. I've put it here and fixed things to make it work.

May the big numbers be with you.

Available for downloading on the Hel Repository.

When required, the bigint function is returned for creation big integers. Those are the table values with a metatable assigned to them that provides some metamethods:

• __add — the addition operation (a + b)
• __sub — the subtraction operation (a - b)
• __mul — the multiplication (a * b)
• __div — the division (a / b)
• __mod — the modulo (a % b)
• __unm — the unary minus (inversion, -a)
• __eq — test for equality (a == b)
• __lt — the "less than" (or "greater than") comparsion (a < b, b > a)
• __le — the "less/greater than or equal to" comparion (a <= b, b >= a)
• __tostring returns the decimal number representation (as string): tonumber(a)

As you can see, all Lua 5.2 operators are supported.