PrimeQ

PrimeQ[n] yields True if n is a prime number, and False otherwise.

Examples

Test if a number is prime:

PrimeQ[17]
(* True *)

PrimeQ[15]
(* False *)

Find primes up to 30:

Select[Range[30], PrimeQ]
(* {2, 3, 5, 7, 11, 13, 17, 19, 23, 29} *)

Please visit the official Wolfram Language Reference for more details.