代碼：
1 import java.util.*; 2 public class Main { 3 public static void main (String [] args) { 4 int repeat,m; 5 Scanner s=new Scanner(System.in); 6 repeat=s.nextInt(); 7 for(int i=1;i<=repeat;i++) { 8 m=s.nextInt(); 9 int num=0; 10 for(int j=1;j<=m;j++) { 11 if(m%j==0) { 12 num++; 13 } 14 } 15 if(num==2) { 16 System.out.println("YES"); 17 } 18 else { 19 System.out.println("NO"); 20 } 21 } 22 } 23 }