Divisor 12398

To determine if any number is divisible by 12398, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 2 and 6199 - then it is divisible by 12398.

The following tests must pass:

• Test if a number is divisible by 2
• The "Sarah Patterson Test" for Divisibility by 6199

Easy!