Divisor 21026

To determine if any number is divisible by 21026, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 2 and 10513 - then it is divisible by 21026.

The following tests must pass:

• Test if a number is divisible by 2
• The "duke_sam Test" for Divisibility by 10513

Easy!