C# Program which calculated factorial to prime function

C# Program whichcalculated factorial to prime function
Program Statement:Write two functions max(int,int) and prime(int). max function will take two arguments and will return the maximum of two s in main. Then main function will pass this calculated factorial to prime function which will show that passed value is prime or not.
Solution: public class _max
{
public int max(int a, int b)
{
if (a > b)
return a;
else
return b;
}
public void prime(int n)
{
if (n == 1)
Console.WriteLine("\n\t\t{0} is maximum but not prime !\n\n", n);
if (n >= 2)
{
if (n % 2 != 0)
{
Console.WriteLine("\n\t\t{0} is maximum and Prime !\n\n", n);
}
else
{ Console.WriteLine("\n\t\t{0} is maximum but not a Prime !\n\n", n); }
}
}
}