import math
def isPrime(n):
    for i in range(2,int(math.sqrt(n))+1):
        if n%i==0:
            return False
    return True
while True:
    try:
        num=input()
        num_list=list(range(2,int(num)+1))
        for i in range(len(num_list)):
            if isPrime(num_list[i]):
                print(num_list[i],end=" ")
            else:
                num_list[i]=0
        print("\n{}".format(num_list.count(0)))
    except:
        break