#include <bits/stdc++.h>
using namespace std;
int ans[] = {0,       2,       3,       5,       7,        13,      17,
             19,      31,      61,      89,      107,      127,     521,
             607,     1279,    2203,    2281,    3217,     4253,    4423,
             9689,    9941,    11213,   19937,   21701,    23209,   44497,
             86243,   110503,  132049,  216091,  756839,   859433,  1257787,
             1398269, 2976221, 3021377, 6972593, 13466917, 20996011};
const int mod = 1000000007;
int power(int x, int y) {
  int ret = 1;
  while (y) {
    if (y & 1) ret = (long long)ret * x % mod;
    y >>= 1;
    x = (long long)x * x % mod;
  }
  return ret;
}
int main() {
  int n;
  scanf("%d", &n);
  printf("%d\n", (power(2, ans[n] - 1) - 1 + mod) % mod);
  return 0;
}
