Divisor 21453

To determine if any number is divisible by 21453, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 7151 - then it is divisible by 21453.

The following tests must pass:

• Test if a number is divisible by 3
• The "Josh Langsfeld Test" for Divisibility by 7151

Easy!