Divisor 15513

To determine if any number is divisible by 15513, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 5171 - then it is divisible by 15513.

The following tests must pass:

• Test if a number is divisible by 3
• The "Steve Test" for Divisibility by 5171

Easy!