n = int(input())
def pf(n):
    i = 2
    factors = []
    while i * i <= n:
        if n % i:
            i += 1
        else:
            n //= i
            factors.append(i)
    if n > 1:
        factors.append(n)
    return factors
if n == 1 or len(set(pf(n))) <= 2:
    print("Yes")
else:
    print("No")