Divisor 23303

To determine if any number is divisible by 23303, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 3329 - then it is divisible by 23303.

The following tests must pass:

• Test if a number is divisible by 7
• The "Fergus Test" for Divisibility by 3329

Easy!