A = int(input())
Fermat_primes = [3, 5, 17, 257, 65537]
counter = 0
bit = 1 << 5
for i in range(bit):
    if i != 0:
        t = 1
        for j in range(5):
            if (i >> j) & 1:
                t *= Fermat_primes[j]
    else: t = 4
    while t <= A:
        counter += 1
        t *= 2
print(counter)