Divisor 17899

To determine if any number is divisible by 17899, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 2557 - then it is divisible by 17899.

The following tests must pass:

• Test if a number is divisible by 7
• The "Satan's Burgers Test" for Divisibility by 2557

Easy!