Divisor 1329

To determine if any number is divisible by 1329, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 443 - then it is divisible by 1329.

The following tests must pass:

• Test if a number is divisible by 3
• Test if a number is divisible by 443

Easy!