this best code ever

After another attempt I did get a simple solution to work. Why not make ranking Kata's an ongoing process?

It's not the author rating the Kata's.
Lately Kata's are tremendously underrated by a bunch of know-it-alls, who seem to call the shots here. You're better off focusing on the older ones.
That said: this one is actually not that difficult. I don't know why a straightforward solution is not working out for you.
I just solved this one in a few minutes, without any hocus pocus.

+1

Ranking this a 7 kyu is a joke. I tried brute force, and a Miller Rabin primality test. Both fail. I have not yet tried a sieve, but for a rank 7. What a waste of time. Will have to remember to steer clear of this author in the future.

is this really 7kyu ?!

is this a joke i was trying to solve it for one hour and you did it like this. lol

why isn't this good method ?
my code is the same as above and i thought it is good :)

it is for begginers like me so i think the perfomance is not important.

nice i am planing to learn it soon

Java script

what is it ? the second one

2

how many luanguages do you know ?

lol nice code :)