# Documentation for sub is-prime

Documentation for sub is-prime, assembled from the following types:

# class Int

From Int

## (Int) routine is-prime

Defined as:

multi sub is-prime (Int --> Bool)multi method is-prime (Int: --> Bool)

Returns `True`

if this `Int`

is known to be a prime, or is likely to be a prime based on a probabilistic Miller-Rabin test.

Returns `False`

if this `Int`

is known not to be a prime.

say 2.is-prime; # OUTPUT: «True»say is-prime(9); # OUTPUT: «False»