Divisor 9939

To determine if any number is divisible by 9939, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 3313 - then it is divisible by 9939.

The following tests must pass:

• Test if a number is divisible by 3
• The "Alice Shimmin Test" for Divisibility by 3313

Easy!