Divisor 9561

To determine if any number is divisible by 9561, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 3187 - then it is divisible by 9561.

The following tests must pass:

• Test if a number is divisible by 3
• The "Michael Lorenzana Test" for Divisibility by 3187

Easy!