Divisor 20017

To determine if any number is divisible by 20017, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 37 and 541 - then it is divisible by 20017.

The following tests must pass:

• Test if a number is divisible by 37
• Test if a number is divisible by 541

Easy!