#include <bits/stdc++.h>
using namespace std;
template <typename T>
void ri(T& x);
const int MAXN = 1e5 + 2;
int n, a[MAXN];
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cin >> n;
  int cur = 1;
  for (int i = 2; i <= n; ++i) {
    if (a[i] == 0) {
      a[i] = cur;
      for (int j = i << 1; j <= n; j += i) {
        a[j] = cur;
      }
      ++cur;
    }
  }
  for (int i = 2; i <= n; ++i) {
    cout << a[i] << ' ';
  }
  return 0;
}
template <typename T>
void ri(T& x) {
  char c;
  bool minus = false;
  while ((c = getchar()) < '0' || '9' < c)
    if (c == '-') minus = true;
  x = c - '0';
  while ('0' <= (c = getchar()) && c <= '9') x = 10 * x - '0' + c;
  if (minus) x = -x;
}
