Divisor 6415

To determine if any number is divisible by 6415, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 5 and 1283 - then it is divisible by 6415.

The following tests must pass:

• Test if a number is divisible by 5
• The "Sushiman Test" for Divisibility by 1283

Easy!