I think your issue is you're getting stuck in an infinite while loop when the solution doesn't reduce to 0. The random tests include random numbers that won't necessarily reduce to 0 and should return false.

Hope that helps!

Could you post your solution so I could try and replicate your problem? Thanks!

I think that if you're going to count twin primes that include n + 1 you should state that in the description as it was unclear before I ran the tests.

Thanks for the feedback! I've now added random tests :)

Thanks for the feedback!

I've changed the kata so now the required output for errors is false, do you think that is sufficient or do I need to put it a try/catch error handler for best practise?