Divisor 21958

To determine if any number is divisible by 21958, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 2 and 10979 - then it is divisible by 21958.

The following tests must pass:

• Test if a number is divisible by 2
• The "H_Y Test" for Divisibility by 10979

Easy!