Divisor 20157

To determine if any number is divisible by 20157, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 6719 - then it is divisible by 20157.

The following tests must pass:

• Test if a number is divisible by 3
• The "Dr.Tau Test" for Divisibility by 6719

Easy!