Divisor 23717

To determine if any number is divisible by 23717, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 37 and 641 - then it is divisible by 23717.

The following tests must pass:

• Test if a number is divisible by 37
• Test if a number is divisible by 641

Easy!