Divisor 17855

To determine if any number is divisible by 17855, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 5 and 3571 - then it is divisible by 17855.

The following tests must pass:

• Test if a number is divisible by 5
• The "Robin Stevens Test" for Divisibility by 3571

Easy!