Divisor 22789

To determine if any number is divisible by 22789, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 13 and 1753 - then it is divisible by 22789.

The following tests must pass:

• Test if a number is divisible by 13
• The "William Stone Test" for Divisibility by 1753

Easy!