description: Gregor is learning about RSA cryptography, and although he doesn't understand how RSA works, he is now fascinated with prime numbers and factoring them.
  
  Gregor's favorite prime number is P. Gregor wants to find two bases of P. Formally, Gregor is looking for two integers a and b which satisfy both of the following properties.
  
    * P mod a = P mod b, where x mod y denotes the remainder when x is divided by y, and 
    * 2 ≤ a < b ≤ P. 
  
  
  
  Help Gregor find two bases of his favorite prime number!
  
  Input
  
  Each test contains multiple test cases. The first line contains the number of test cases t (1 ≤ t ≤ 1000).
  
  Each subsequent line contains the integer P (5 ≤ P ≤ {10}^9), with P guaranteed to be prime.
  
  Output
  
  Your output should consist of t lines. Each line should consist of two integers a and b (2 ≤ a < b ≤ P). If there are multiple possible solutions, print any.
  
  Example
  
  Input
  
  
  2
  17
  5
  
  
  Output
  
  
  3 5
  2 4
  
  Note
  
  The first query is P=17. a=3 and b=5 are valid bases in this case, because 17 mod 3 = 17 mod 5 = 2. There are other pairs which work as well.
  
  In the second query, with P=5, the only solution is a=2 and b=4.
solution: //package cp;
  import java.util.*;
  
  import static java.lang.Math.min;
  import static java.lang.Math.abs;
  import static java.lang.Math.max;
  import java.io.*;
  import java.text.DateFormatSymbols;
   
  public class Codechef {
  	static long[] mods = {1000000007, 998244353, 1000000009};
  	static long mod = mods[0];
  	public static MyScanner in;
      public static PrintWriter out;
      static int[][] dp;
      
      
  	public static void main( String[] args ) throws IOException{
  		
   		in = new MyScanner();
   		out = new PrintWriter(System.out);
   		StringBuilder ans1=new StringBuilder();
  		int test=in.nextInt();
  		while(test-->0) {
  			//StringBuilder ans=new StringBuilder();
  			long n=in.nextLong();
  			String ans="";
  			
  			if(n%2!=0)	n--;
  			else n-=2;
  			
  			ans=n/2+" "+n;
  			
  			ans1.append(ans).append(System.getProperty("line.separator"));
  		}
  		
  		out.println(ans1);
   		out.close();
   		
   	}
  
  	//sorted check in non decreasing order
  	static boolean isSorted(long arr[], int n){
         if (n == 0 || n == 1)      return true;
         for (int i = 1; i < n; i++)
             if (arr[i - 1] > arr[i])    return false;
         return true;
      }
  	
  	
  	static long lcm_comp(long a, long b) {	return (a / gcd_comp(a, b)) * b;	}
   
  	static long gcd_comp(long a, long b){
          if (a == 0)		return b;
          if (b == 0)		return a;
          long k;
          for (k = 0; ((a | b) & 1) == 0; ++k){
              a >>= 1;
              b >>= 1;
          }
          while ((a & 1) == 0)	a >>= 1;  
          do{
              while ((b & 1) == 0)	 b >>= 1;
              if (a > b){    
                  long temp = a;
                  a = b;
                  b = temp;
              }
              b = (b - a);
          } while (b != 0);
          return a << k;
      }
  
  	
  	//comparator to solve according to b in descending order
  	static class Pair implements Comparable<Pair>{
  		private long a;
  		private long b;
  		public Pair(long a, long b) {
  			this.a = a;
  			this.b = b;
  		}
  		public int compareTo(Pair other) {
  			return Long.compare(this.b, other.b );		//to sort in ascending order swap the arguments in Long.compare
  			//return Long.compare(other.b ,this.b); 	//to sort in descending order swap the arguments in Long.compare
  		}
  	}
  	
  	static void printArray(long[] a) {
  		StringBuilder stringBuilder=new StringBuilder();
  		for(long i: a)	stringBuilder.append(i).append(" ");
  		out.println(stringBuilder);
  	}
  	
  	static void printArray(int[] a) {
  		StringBuilder stringBuilder=new StringBuilder();
  		for(int i: a)	stringBuilder.append(i).append(" ");
  		out.println(stringBuilder);
  	}
  	
  	public static void sort(long[] array){
  		ArrayList<Long> copy = new ArrayList<>();
  		for (long i : array)
  			copy.add(i);
  		Collections.sort(copy);
  		for(int i = 0;i<array.length;i++)
  			array[i] = copy.get(i);
  	}
  	
  	public static void sortDes(long[] array){
  		ArrayList<Long> copy = new ArrayList<>();
  		for (long i : array)
  			copy.add(i);
  		Collections.sort(copy);
  		int j=array.length-1;
  		for(int i = 0;i<array.length;i++)
  			array[j--] = copy.get(i);
  	}
  	
  	
  	static String[] readArrayString(int n){
  		String[] array = new String[n];
  		for(int j =0 ;j<n;j++)
  			array[j] = in.next();
  		return array;
  	}
  	
  	
  	static int[] readArrayInt(int n){
      	int[] array = new int[n];
      	for(int j = 0;j<n;j++)
      		array[j] = in.nextInt();
      	return array;
      }
  	
  	static int[] readArrayInt1(int n){
  		int[] array = new int[n+1];
  		for(int j = 1;j<=n;j++){
  			array[j] = in.nextInt();
  		}
  		return array;
  	}
  	
  	static long[] readArrayLong(int n){
  		long[] array = new long[n];
  		for(int j =0 ;j<n;j++)
  			array[j] = in.nextLong();
  		return array;
  	}
  	
  	static double[] readArrayDouble(int n){
  		double[] array = new double[n];
  		for(int j =0 ;j<n;j++)
  			array[j] = in.nextDouble();
  		return array;
  	}
  	
  	static int minIndex(int[] array){
  		int minValue = Integer.MAX_VALUE;
  		int minIndex = -1;
  		for(int j = 0;j<array.length;j++){
  			if (array[j] < minValue){
  				minValue = array[j];
  				minIndex = j;
  			}
  		}
  		return minIndex;
  	}
  	
  	static int minIndex(long[] array){
  		long minValue = Long.MAX_VALUE;
  		int minIndex = -1;
  		for(int j = 0;j<array.length;j++){
  			if (array[j] < minValue){
  				minValue = array[j];
  				minIndex = j;
  			}
  		}
  		return minIndex;
  	}
  	
  	static int minIndex(double[] array){
  		double minValue = Double.MAX_VALUE;
  		int minIndex = -1;
  		for(int j = 0;j<array.length;j++){
  			if (array[j] < minValue){
  				minValue = array[j];
  				minIndex = j;
  			}
  		}
  		return minIndex;
  	}
  	
  	
  	static int maxIndex(int[] array){
  		int maxValue = Integer.MIN_VALUE;
  		int maxIndex = -1;
  		for(int j = 0;j<array.length;j++){
  			if (array[j] > maxValue){
  				maxValue = array[j];
  				maxIndex = j;
  			}
  		}
  		return maxIndex;
  	}
  	
  	static int maxIndex(long[] array){
  		long maxValue = Long.MIN_VALUE;
  		int maxIndex = -1;
  		for(int j = 0;j<array.length;j++){
  			if (array[j] > maxValue){
  				maxValue = array[j];
  				maxIndex = j;
  			}
  		}
  		return maxIndex;
  	}
  	
  	
  	static long power(long x, long y){
  		if (y == 0)
  			return 1;
  		if (y%2 == 1)
  			return (x*power(x, y-1))%mod;
  		return power((x*x)%mod, y/2)%mod;
  	}
  	static void verdict(boolean a){
          out.println(a ? "YES" : "NO");
      }
  	
      public static class MyScanner {
          BufferedReader br;
          StringTokenizer st;
          public MyScanner() {
              br = new BufferedReader(new InputStreamReader(System.in));
          }
          String next() {
              while (st == null || !st.hasMoreElements()) {
                  try {
                      st = new StringTokenizer(br.readLine());
                  } 
                  catch (IOException e) {
                      e.printStackTrace();
                  }
              }
              return st.nextToken();
          }
          int nextInt() {
              return Integer.parseInt(next());
          }
          long nextLong() {
              return Long.parseLong(next());
          }
          double nextDouble() {
              return Double.parseDouble(next());
          }
          String nextLine() {
              String str = "";
              try{
                  str = br.readLine();
              } 
              catch (IOException e) {
                  e.printStackTrace();
              }
              return str;
          }
          
      }	
  }