You are probably making an array upto n.
The tests on submit are usually bigger than the example tests.

Try to think of a better way to check if the number is prime.

When I run my code I get the following error message even tho my code passes?

Test Passed
Traceback:
in
in Is_Prime
MemoryError
1 Passed
0 Failed
0 Errors
Process took 15ms to complete