#include <bits/stdc++.h>
using namespace std;
const long long MOD = 1000000007LL;
int pr[100] = {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, 24036583};
long long exp2(long long a, long long b, long long m) {
  long long ans = 1, num = a;
  while (b != 0) {
    if (b % 2 == 1) ans = (ans * num) % m;
    num = (num * num) % m;
    b = b / 2;
  }
  return ans;
}
int main() {
  int n;
  scanf("%d", &n);
  printf("%I64d\n", (exp2(2, pr[n - 1] - 1, MOD) + MOD - 1) % MOD);
  return 0;
}
