Divisor 21233

To determine if any number is divisible by 21233, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 17 and 1249 - then it is divisible by 21233.

The following tests must pass:

• Test if a number is divisible by 17
• The "Volodymyr Test" for Divisibility by 1249

Easy!