Divisor 21237

To determine if any number is divisible by 21237, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 7079 - then it is divisible by 21237.

The following tests must pass:

• Test if a number is divisible by 3
• The "Jay Dick Test" for Divisibility by 7079

Easy!