Divisor 21963

To determine if any number is divisible by 21963, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 7321 - then it is divisible by 21963.

The following tests must pass:

• Test if a number is divisible by 3
• The "CanadianInMichigan Test" for Divisibility by 7321

Easy!