Divisor 18551

To determine if any number is divisible by 18551, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 13 and 1427 - then it is divisible by 18551.

The following tests must pass:

• Test if a number is divisible by 13
• The "lundf Test" for Divisibility by 1427

Easy!