Divisor 21265

To determine if any number is divisible by 21265, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 5 and 4253 - then it is divisible by 21265.

The following tests must pass:

• Test if a number is divisible by 5
• The "Douglas Ellison Test" for Divisibility by 4253

Easy!