Divisor 4006

To determine if any number is divisible by 4006, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 2 and 2003 - then it is divisible by 4006.

The following tests must pass:

• Test if a number is divisible by 2
• The "Dirk Franken Test" for Divisibility by 2003

Easy!