#include <bits/stdc++.h>
using namespace std;
vector<long long> v;
long long dp2[40];
long long dp3[40];
int main() {
  long long l, r;
  v.push_back(1);
  cin >> l >> r;
  v.push_back(2);
  v.push_back(3);
  dp2[0] = 2;
  dp3[0] = 3;
  for (int i = 1; i <= 31; i++) {
    dp2[i] = dp2[i - 1] * 2;
    v.push_back(dp2[i]);
  }
  for (int i = 1; i <= 20; i++) {
    dp3[i] = dp3[i - 1] * 3;
    v.push_back(dp3[i]);
  }
  long long tmp;
  for (int i = 0; i <= 31; i++) {
    for (int j = 0; j <= 20; j++) {
      tmp = dp2[i] * dp3[j];
      if (tmp < 2000000000 && tmp > 0) v.push_back(tmp);
    }
  }
  sort(v.begin(), v.end());
  auto le = lower_bound(v.begin(), v.end(), l);
  auto ri = lower_bound(v.begin(), v.end(), r + 1);
  long long ans = ri - le;
  cout << ans << endl;
}
