Wait, but aren't 101 and 107 primes in the range [100, 110] with a prime gap of 6? That should be correct, right? I looked through the directions and saw that [101, 107] doesn't violate the rules. (Never mind I read the description again)

Yes this happens every time it checks for null, including the sample tests.

Is it a problem with my computer? When I return null, it returns something like J@2eydhe74 or garbage like that and marks it as incorrect.

I am using Java.

I keep on trying to return null but instead returns gibberish and shows it as incorrect. Is there any way to fix this?