Divisor 16999

To determine if any number is divisible by 16999, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 89 and 191 - then it is divisible by 16999.

The following tests must pass:

• Test if a number is divisible by 89
• Test if a number is divisible by 191

Easy!