Divisor 10503

To determine if any number is divisible by 10503, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 27 and 389 - then it is divisible by 10503.

The following tests must pass:

• Test if a number is divisible by 27
• Test if a number is divisible by 389

Easy!