Divisor 27517

To determine if any number is divisible by 27517, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 3931 - then it is divisible by 27517.

The following tests must pass:

• Test if a number is divisible by 7
• The "Christ van Willegen Test" for Divisibility by 3931

Easy!