#include <cstdio>
#include <cctype>
#include <cstring>
#include <cmath>

using namespace std;

char word[21];
int resp;

bool read() {
    return scanf("%s", word) != EOF;
}

bool isPrime(int x) {
    if (x == 1 || x == 2 || x == 3) return true;
    else for (int i = 2; i < sqrt(x)+1; i++) if (x % i == 0) return false;
    return true;
}

void process() {
    resp = 0;
    for (int i = 0; i < strlen(word); i++) {
        if (islower(word[i])) resp += ((int) (word[i]-96));
        else if (isupper(word[i])) resp += ((int) (word[i]-38));
    }

    if (isPrime(resp)) printf("It is a prime word.\n");
    else printf("It is not a prime word.\n");
}

int main() {
    while(read()) process();
}