function Main (input) {
	input = input.split("\n");
	input = input[0].split(" ");
	var N = parseInt(input[0], 10);
	var K = parseInt(input[1], 10);
	ans = 0;
	for (var i = 2; i <= N; i++){
		var tmp = i;
		var k = 0;
		for (var j = 2; j * j <= tmp; j++){
			var ok = false;
			while (tmp % j == 0){
				ok = true;
				tmp = Math.floor(tmp / j);
			}
			if (ok){
				k += 1;
			}
		}
		if (k >= K){
			ans += 1;
		}
	}
	console.log(ans);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));