Divisor 20523

To determine if any number is divisible by 20523, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 6841 - then it is divisible by 20523.

The following tests must pass:

• Test if a number is divisible by 3
• The "DarkElder Test" for Divisibility by 6841

Easy!