Divisor 22779

To determine if any number is divisible by 22779, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 9 and 2531 - then it is divisible by 22779.

The following tests must pass:

• Test if a number is divisible by 9
• The "Justin Newnum Test" for Divisibility by 2531

Easy!