#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 5;
const long long int infP = 1e18;
void solve() {
  long long int n;
  cin >> n;
  vector<long long int> div(n + 1);
  for (long long int i = 2; i <= n; i++) {
    if (div[i] == 0) {
      for (long long int j = i; j <= n; j += i) div[j] = i;
    }
  }
  long long int val = 1;
  vector<long long int> v(n + 1);
  for (long long int i = 2; i <= n; i++) {
    if (div[i] == i) v[i] = val++;
  }
  for (long long int i = 2; i <= n; i++) cout << v[div[i]] << " ";
}
void debug(long long int tt) {}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int t = 1;
  while (t--) {
    solve();
  }
}
