#include <bits/stdc++.h>
using namespace std;
long long int _xor(long long int a, long long int b) { return a ^ b; }
long long int _and(long long int a, long long int b) { return a & b; }
long long int _or(long long int a, long long int b) { return a | b; }
long long int _not(long long int a) { return ~a; }
long long int cum[1000000], pi[2005];
int main() {
  long long int b, c = 0, x, y, z, t, i, j, k, l1, l2, m, n, c1 = 0, c2 = 0, q,
                   poisa, f = 0, ans = 0, a;
  scanf("%lld", &l1);
  scanf("%lld", &l2);
  for (i = 1; i <= l1 - 1; i = i * 2) {
    for (j = 1; j <= l1 - 1; j = j * 3) {
      if (i * j > l1 - 1) {
        f = 1;
        break;
      } else if (1 <= i * j && i * j <= l1 - 1) {
        c1++;
      }
    }
  }
  for (i = 1; i <= l2; i = i * 2) {
    for (j = 1; j <= l2; j = j * 3) {
      if (i * j > l2) {
        f = 1;
        break;
      } else if (1 <= i * j && i * j <= l2) {
        c2++;
      }
    }
  }
  cout << c2 - c1;
  return 0;
}
