质数检测V2

import java.math.BigInteger;
import java.util.*;
public class Main {

	 public static void main(String[]args) {  
		 	Scanner cin=new Scanner(System.in);
		 	BigInteger a=cin.nextBigInteger();
		 	Boolean b=a.isProbablePrime(66);
		 	if(b==true)System.out.println("Yes");
		 	else System.out.println("No");
	 }

}