Divisor 18577

To determine if any number is divisible by 18577, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 13 and 1429 - then it is divisible by 18577.

The following tests must pass:

• Test if a number is divisible by 13
• The "Antony Pepper Test" for Divisibility by 1429

Easy!