Divisor 15509

To determine if any number is divisible by 15509, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 13 and 1193 - then it is divisible by 15509.

The following tests must pass:

• Test if a number is divisible by 13
• The "waf Test" for Divisibility by 1193

Easy!