Write a program to input a number and find the Primorial of this number? (6= 2, 3, 5 =2*3*5=30)

42)   Write a program to input a number and find the Primorial of this number? (6= 2, 3, 5        à2*3*5=30)

import java.util.*;

public class Primorial

{

   public static void main(String args[ ])

   {

      Scanner sc = new Scanner (System.in);

      System.out.println("Enter a number");

      int a = sc.nextInt();

      int p=1;

      for(int i=2;i<=a;i++)

      {

        int c = 0;

        for(int j=1;j<=i;j++)

        {

            if(i%j==0)

            c++;

        }

        if(c==2)

        {

            p = p*i;

        }                 

      }

      System.out.println("PRIMORIAL of "+a+" = "+p);

    }

}

output :  

primorial-of-a-number

41)   Write a program to input two integers and find the GCD/HCF of two numbers (using division method)? (10,12, HCF=2)