Divisor 20779

To determine if any number is divisible by 20779, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 11 and 1889 - then it is divisible by 20779.

The following tests must pass:

• Test if a number is divisible by 11
• The "Justin Begley Test" for Divisibility by 1889

Easy!