Divisor 21365

To determine if any number is divisible by 21365, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 5 and 4273 - then it is divisible by 21365.

The following tests must pass:

• Test if a number is divisible by 5
• The "Alex Panton Test" for Divisibility by 4273

Easy!