Divisor 399
- Prime Number:
- No
Test for Divisibility by 399
To determine if any number is divisible by 399, you must apply 3 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 7 and 19 - then it is divisible by 399.
The following tests must pass:
- Test if a number is divisible by 3
- Test if a number is divisible by 7
- Test if a number is divisible by 19
Easy!