N, K = map(int, input().split())
X = [-1] * (N+1)
L = [[] for _ in range(N+1)]
k = 2
while k <= N:
    X[k] = 1
    L[k].append(k)
    for i in range(k*2, N+1, k):
        X[i] = 0
        L[i].append(k)
    d = 2
    while k**d <= N:
        for i in range(k**d, N+1, k**d):
            L[i].append(k)
        d += 1
    while k <= N and X[k] >= 0:
        k += 1

print(sum([1 if len(set(l)) >= K else 0 for l in L]))