MT1261 残る人は幸運だ

def main():
    #code here
    # //1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
    # //1 3 5 7 9 11 13 15 17 19
    # //1 3 7 9 13 15 19
    # //1 3 7 9 15 19
    # //1 3 7 9 19 
    n = int(input())
    count = 2
    while(count <= n):
        if(n % count ==0 ):
            print('NO')
            break
        n -= (n // count )
        count+=1
    if count > n: print('YES')
    pass

if __name__ == '__main__':
    main();