Divisor 28173

To determine if any number is divisible by 28173, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 9391 - then it is divisible by 28173.

The following tests must pass:

• Test if a number is divisible by 3
• The "Eagris Test" for Divisibility by 9391

Easy!