So long as it’s never trying to parse a non-digit, the unwraps should be fine. Since it’s using i128s as arguments (and then converting them to strings to do th

So long as it’s never trying to parse a non-digit, the unwraps should be fine. Since it’s using i128s as arguments (and then converting them to strings to do the maths) that should be safe. For actual use, a proper bignum type for the arguments seems like it should be the biggest change needed though.