I initially tried to nest too many array methods and failed the time test. Separating and keeping them simple helped.

Challenges with time/performance are good way to practice thinking about alternatives.

All tests worked until your code timed out, it's not fast enough. Try another way.

All tests are working but getting timeout exception for arrays of length 15000 and above.

Looks like there is an extra space before the E

Most probably it's because of the complexity of the algorithm. Try to find a solution which needs less time to do the calculation! ;)

I have my Tests Passing with

Time: 592ms Passed: 19 Failed: 0
Test Results:
 Basic
 Basic tests (6 of 6 Assertions)
 Test prime (5 of 5 Assertions)
 Test not prime (8 of 8 Assertions)
Completed in 1.84ms
You have passed all of the tests! :)

but I am getting this Error when Running my attempt:

Passed: 0 Failed: 1 Errors: 1 Exit Code: 1
Test Results:
Execution Timed Out
 STDERR
Execution Timed Out (12000 ms)

use BigInteger to store your resultant

All tests before it times out isn't the same as all tests. Improve your algorithm.

same timeout issue for me too.

Negative numbers below 0 are not considered prime generally.
So it is obvious that it should return false.

Server timeout error. Even all tests passed.

Ok.. Yeah that will do.

Print the input.

I eventually solved this, but would have appreciated seeing in the instructions that there is a 3-space separation between words but only a 2-space separation between numbers. It took me a long time to figure that out, I would have come to the solution much quicker if I'd known that when starting.