import java.util.Scanner;

 public class Main{

     public static void main(String[] args) {

         int n;

         Scanner scanner=new Scanner(System.in);

         n=scanner.nextInt();

         while(n>0){

             int a,b;

             int sumA=1,sumB=1;

             a=scanner.nextInt();

             b=scanner.nextInt();

             for(int i=2;i<=a/2;i++){

                 if(a%i==0)

                     sumA+=i;

             }

             if(sumA==b){

                 for(int i=2;i<=b/2;i++)

                     if(b%i==0)

                         sumB+=i;

                 if(sumB==a)

                     System.out.println("YES");

                 else

                     System.out.println("NO");

             }else

                 System.out.println("NO");

             n--;

         }

     }

 }