#include<iostream>
#include<map>
#define repi(i,a,b) for(int i=(a);i<(b);++i)

std::map<int, int> prime_factor( int n )
{
	std::map<int, int> ret;

	for( int i = 2; i*i <= n; ++i ) while( n % i == 0 )
	{
		++ret[i];
		n /= i;
	}

	if( n != 1 )
		++ret[n];

	return ret;
}

int main()
{
	int N, K;
	std::cin >> N >> K;

	int ans = 0;
	repi( i, 2, N+1 )
	{
		auto m = prime_factor( i );
	
		ans += m.size() >= K;
	}

	printf( "%d\n", ans );

	return 0;
}