Awesome, glad to help.

@Farekkusu I'm sorry; I'm fairly new to Codewars.. and I'm still trying to get a hang of using this.. Yes, I know what the error means. :)

@rccones1
I must of missed that when I copied out the solution...so I could reset it. I have placed it back and it works now. thanks!

Do you have using System; at the top?

Have you tried searching for the meaning of an error message?

I had to reset the kata.. due it says it was solved and it was not... when I go to run my code again... it returns the following errors.. How do I resolve? I have tried resetting it a few times.. even clearing my browser history. It worked before

src/Solution.cs(5,13): error CS0103: The name 'Console' does not exist in the current context
src/Solution.cs(15,34): error CS0103: The name 'Math' does not exist in the current context
src/Solution.cs(15,45): error CS0103: The name 'Math' does not exist in the current context

Simply add this line: Console.WriteLine(n); in the beginning of your solution, and you will get some lines printed in the tests output panel.

I'm not sure how to do that on this site.. and where would it show up. I know how to do that in the VS..but not knowing what number is in the random test.. i'm not quite sure.

Your solution is almost good, lacks one minor fix, and fails for some specific cases. Do you know how to print input n and see for what numbers your solution fails? Try it for, for example, 243193867 which is not prime (it can be factorized into 7×34741981), but your solution reports it as prime.