Divisor 15757

To determine if any number is divisible by 15757, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 2251 - then it is divisible by 15757.

The following tests must pass:

• Test if a number is divisible by 7
• The "Definitely not a mafia boss Test" for Divisibility by 2251

Easy!