Divisor 20018

To determine if any number is divisible by 20018, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 2 and 10009 - then it is divisible by 20018.

The following tests must pass:

• Test if a number is divisible by 2
• The "Josh Bookout Test" for Divisibility by 10009

Easy!