Divisor 20699

To determine if any number is divisible by 20699, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 2957 - then it is divisible by 20699.

The following tests must pass:

• Test if a number is divisible by 7
• The "Murr Rockstroh Test" for Divisibility by 2957

Easy!