#include <iostream>
#include <string>
#include <stdio.h>
#include <stdint.h>
using namespace std;

using ll = long long;

#define TYPE_OF( VAR ) remove_const<remove_reference<decltype( VAR )>::type >::type
#define CIN( LL , A ) LL A; cin >> A 
#define ASSERT( A , MIN , MAX ) assert( MIN <= A && A <= MAX ) 
#define CIN_ASSERT( A , MIN , MAX ) CIN( TYPE_OF( MAX ) , A ); ASSERT( A , MIN , MAX ) 
#define FOR( VAR , INITIAL , FINAL_PLUS_ONE ) for( TYPE_OF( FINAL_PLUS_ONE ) VAR = INITIAL ; VAR < FINAL_PLUS_ONE ; VAR ++ ) 
#define QUIT return 0 
#define RETURN( ANSWER ) cout << ( ANSWER ) << "\n"; QUIT 

#include <cassert>

#define MAIN main

int MAIN()
{
  constexpr const ll bound = 1000000000 - 1;
  CIN_ASSERT( P , 3 , bound );
  assert( P % 2 == 1 );
  constexpr const ll R = 31622;
  FOR( i , 2 , R ){
    if( i == P ){
      break;
    }
    assert( P % i != 0 );
  }
  P %= 8;
  RETURN( ( P == 1 || P == 7 ) ? "YES" : "NO" );
}