#include <bits/stdc++.h>
using namespace std;

constexpr int N = 5e6;
constexpr array<int, 3> primes = {2, 3, 5};

array<array<int, N + 1>, 3> cnt_prime;

int main() {
    // freopen("pascal.in", "r", stdin);
    // freopen("pascal.out", "w", stdout);

    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    for (int i = 0; i < 3; i++) {
        for (int j = primes[i]; j <= N; j *= primes[i]) {
            for (int k = j; k <= N; k += j) {
                cnt_prime[i][k]++;
            }
        }
        for (int j = 1; j <= N; j++) {
            cnt_prime[i][j] += cnt_prime[i][j - 1];
        }
    }

    int r, d;
    cin >> r >> d;

    array<int, 3> req = {};
    int tmp = d;
    for (int i = 0; i < 3; i++) {
        while (tmp % primes[i] == 0) {
            tmp /= primes[i];
            req[i]++;
        }
    }

    int ans = 0;
    for (int i = 0; i <= r; i++) {
        bool ok = true;
        for (int j = 0; j < 3; j++) {
            ok &= cnt_prime[j][r] - cnt_prime[j][i] - cnt_prime[j][r - i] >= req[j];
        }
        ans += ok;
    }
    cout << ans << '\n';

    return 0;
}