#include<bits/stdc++.h>
using namespace std;
bool mark[10005];

void sieve()
{
    memset(mark,true,sizeof(mark));
    mark[0]=false;
    for(int i=4;i<=10000;i+=2)
        mark[i]=false;
    for(int i=3;i*i<=10000;i++)
    {
        if(mark[i])
        {
            for(int j=i*i;j<=10000;j+=i)
                mark[j]=false;
        }
    }
}
int main()
{
    sieve();
    int i;
    string s;
    while(cin>>s)
    {
        int sum=0;
        for(i=0;i<s.size();i++)
        {
            if(s[i]>='a' && s[i]<='z')
                sum+=s[i]- 'a' +1;
            else
                sum+=s[i]- 'A' +27;
        }
        if(mark[sum])
            cout<<"It is a prime word."<<endl;
         else
            cout<<"It is not a prime word."<<endl;
    }
    return 0;
}