N, K = map(int, input().split())
P = list(range(N+1))
for i in range(2,N+1):
    if i*i>N:break
    for j in range(i*i,N+1,i):
        P[j] = P[i]
ans = 0
for i in range(2,N+1):
    A = set()
    j = i
    while j>1:
        A.add(P[j])
        j = j//P[j]
    if len(A)>=K:
        ans += 1
print(ans)