import math


class FactorCalc:
    def __init__(self, number):
        self.number = number
        self.factors = []
        self.uniqueFactors = set()

    def calc_factors(self):
        number = self.number
        sqrt_number = math.ceil(math.sqrt(self.number))

        for candidate_factor in range(2, sqrt_number + 1):
            if number < candidate_factor:
                break

            while (number % candidate_factor) == 0:
                self.factors.append(candidate_factor)
                self.uniqueFactors.add(candidate_factor)
                number = number / candidate_factor


n, k = map(int, input().split())

count = 0
success_numbers = set()

for i in range(2, n + 1):
    success = False

    for s in success_numbers:
        if i % s == 0:
            success = True
            count += 1
            break

    if success:
        success_numbers.add(i)
        break

    factor = FactorCalc(i)
    factor.calc_factors()

    if len(factor.uniqueFactors) >= k:
        success_numbers.add(i)
        count += 1

print(count)