Divisor 21718

To determine if any number is divisible by 21718, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 2 and 10859 - then it is divisible by 21718.

The following tests must pass:

• Test if a number is divisible by 2
• The "Richard Walsh Test" for Divisibility by 10859

Easy!