import sys
input=lambda: sys.stdin.readline().rstrip()
n,k=map(int,input().split())
def primes(n):
  is_prime=[1]*(n+1)
  is_prime[0]=0
  is_prime[1]=0
  for i in range(2,int(n**0.5)+1):
    if not is_prime[i]:
      continue
    for j in range(i*2,n+1,i):
      is_prime[j]=0
  return [is_prime,[i for i in range(n+1) if is_prime[i]]]
T,P=primes(n)
ans=0
for i in range(2,n+1):
  if T[i]:
    if T[i]>=k:
      ans+=1
    continue
  else:
    for p in P:
      if i%p:
        continue
      else:
        if (i//p)%p:
          T[i]=T[i//p]+1
        else:
          T[i]=T[i//p]
        break
    if T[i]>=k:
      ans+=1
print(ans)