Divisor 13657

To determine if any number is divisible by 13657, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 1951 - then it is divisible by 13657.

The following tests must pass:

• Test if a number is divisible by 7
• The "Peter -jag- Annema Test" for Divisibility by 1951

Easy!