section i of routines in gcd.i

Home Manual Packages Global Index Keywords Quick Reference | # functions in gcd.i - i
is_prime |
                 is_prime(x)

         return non-zero if and only if X (which must be a scalar integer)
         is prime.  May return a false positive if X is greater than about
         3e9, since at most 20000 candidate factors are checked.
         The absolute value of X is taken first; zero is not prime, but 1 is.

    interpreted function, defined at i/gcd.i   line 64
SEE ALSO: | gcd, lcm, factorize