import sys


def input(): return sys.stdin.readline().rstrip()


def main():
    N, K = map(int, input().split())

    sieve = [None]*(N+1)

    for i in range(2, N+1):
        if sieve[i] is None:
            sieve[i] = i
            for j in range(2*i, N+1, i):
                sieve[j] = i

    ans = 0
    for i in range(2, N+1):
        c = p = 0
        while i != 1:
            if p != sieve[i]:
                c += 1
                p = sieve[i]
            i //= p

        if c >= K:
            ans += 1

    print(ans)


if __name__ == '__main__':
    main()