using System;

namespace Prime{

public class Program

{

    public static void Main()

    {

        for (int i=2; i<100; i++ )

                {

                    for (int j=1;j<=i; j++)

                            {

                        if( i!=j && i %j==0)

                                {

                                    break;

                                }

                            else {

                            Console.WriteLine(i);   

                            }

                                }

                        }

                }   

            }

    }

​