#include <stdio.h>
#include <math.h>
int main()
{
    int T, N, i, j;

    scanf("%d", &T);
    for(i = 1; i <= T; i++) {
        scanf("%d", &N);
        if(N == 2) {
            printf("%d is a prime\n", N);
        }
        else if(N == 1) {
            printf("%d is not a prime\n", N);
        }
        else {
        for(j = 2; j <= sqrt(N); j++) {
            if(N % j == 0) {
                printf("%d is not a prime\n", N);
            }
            else {
                printf("%d is a prime\n", N);
            }
        }
        }
    }
    return 0;
}