PrimeCheck returning true for every number smaller than 2

[0Zeta]

There is a bug that causes every number smaller than 2 to be evaluated as prime, which obviously isn't the case as 2 is the smallest prime number.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

Please reopen this issue once you commit the changes requested or make improvements on the code. Thank you for your contributions.