#include <bits/stdc++.h>
using namespace std;
const int M = 2e9 + 5;
vector<long long> v, u, vv;
int main() {
  ios_base ::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long a = 2, b = 3;
  vv.push_back(1);
  while (a <= M) {
    v.push_back(a);
    vv.push_back(a);
    a <<= 1LL;
  }
  while (b <= M) {
    u.push_back(b);
    vv.push_back(b);
    b *= 3LL;
  }
  for (auto i : v)
    for (auto j : u) vv.push_back(i * j);
  sort(vv.begin(), vv.end());
  unique(vv.begin(), vv.end());
  int l, r;
  cin >> l >> r;
  int x = lower_bound(vv.begin(), vv.end(), l) - vv.begin();
  int y = upper_bound(vv.begin(), vv.end(), r) - vv.begin();
  cout << y - x;
  return 0;
}
