#include <bits/stdc++.h>
int z[40] = {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};
int mathon(int n) {
  long long x = 1;
  for (int i = 30, j = 1 << 30; j > 0; i--, j >>= 1) {
    x = (x * x) % 1000000007;
    if ((z[n - 1] - 1) & j) {
      x += x;
      if (x >= 1000000007) x -= 1000000007;
    }
  }
  return (int)x - 1;
}
int main() {
  int n;
  scanf("%d", &n);
  printf("%d\n", mathon(n));
}
