Divisor 8457

To determine if any number is divisible by 8457, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 2819 - then it is divisible by 8457.

The following tests must pass:

• Test if a number is divisible by 3
• The "June Walsh Test" for Divisibility by 2819

Easy!