Divisor 22663

To determine if any number is divisible by 22663, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 131 and 173 - then it is divisible by 22663.

The following tests must pass:

• Test if a number is divisible by 131
• Test if a number is divisible by 173

Easy!