prime? ( n -- ? )
Prime numbers

Next:

next-prime ( n -- p )

Vocabulary
math.primes

Inputs

n	an integer

Outputs

?

a boolean

Word description
Test if an integer is a prime number.

See also
next-prime

Definition

USING: combinators kernel math math.primes.private sequences ;

IN: math.primes

: prime? ( n -- ? )
    dup integer? [
        {
            { [ dup 7 < ] [ { 2 3 5 } member? ] }
            { [ dup simple? ] [ drop f ] }
            [ (prime?) ]
        } cond
    ] [ drop f ] if ; foldable flushable