#include <iostream>
#include <string>
using namespace std;
string a; // a= 97 A= 65
int S,C;
int main()
{
cin>>a;
for(int x=0; x<a.length(); x++)
{
if(a[x]>=97) S+=a[x]-96;
else S+=a[x]-38;
}
for(int y=2; y<S; y++)
{
if(S%y==0) C=1;
}
if(C==1) cout<<"It is not a prime word.";
else cout<<"It is a prime word.";
}