Divisor 15983

To determine if any number is divisible by 15983, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 11 and 1453 - then it is divisible by 15983.

The following tests must pass:

• Test if a number is divisible by 11
• The "Jakob Petersson Test" for Divisibility by 1453

Easy!