Divisor 15659

To determine if any number is divisible by 15659, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 2237 - then it is divisible by 15659.

The following tests must pass:

• Test if a number is divisible by 7
• The "Alan Hanrahan Test" for Divisibility by 2237

Easy!