import java.io.*;
import java.util.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        TreeSet<Integer> square = new TreeSet<>();
        TreeSet<Integer> sExists = new TreeSet<>();
        for (int i = 1; i * i <= n; i++) {
            square.add(i * i);
            sExists.add(i * i);
        }
        int[] ans = new int[n];
        for (int i = 1; i <= n; i++) {
            if (ans[i - 1] > 0) {
                continue;
            }
            if (square.contains(i)) {
                ans[i - 1] = sExists.pollLast();
                ans[ans[i - 1] - 1] = i;
            } else {
                Integer current = square.floor(n / i);
                while (current != null) {
                    if (ans[i * current - 1] == 0) {
                        ans[i - 1] = i * current;
                        ans[i * current - 1] = i;
                        break;
                    }
                    current = square.lower(current);
                }
            }
        }
        System.out.println(String.join(" ", Arrays.stream(ans).mapToObj(String::valueOf).toArray(String[]::new)));
    }
} 
class Utilities {
    static String arrayToLineString(Object[] arr) {
        return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
    }
    
    static String arrayToLineString(int[] arr) {
        return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public int[] nextIntArray() throws Exception {
        return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}