Divisor 21986

To determine if any number is divisible by 21986, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 2 and 10993 - then it is divisible by 21986.

The following tests must pass:

• Test if a number is divisible by 2
• The "Tom S Test" for Divisibility by 10993

Easy!