Divisor 20381

To determine if any number is divisible by 20381, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 89 and 229 - then it is divisible by 20381.

The following tests must pass:

• Test if a number is divisible by 89
• Test if a number is divisible by 229

Easy!