Divisor 20579

To determine if any number is divisible by 20579, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 13 and 1583 - then it is divisible by 20579.

The following tests must pass:

• Test if a number is divisible by 13
• The "clownfactory Test" for Divisibility by 1583

Easy!