Divisor 20957

To determine if any number is divisible by 20957, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 19 and 1103 - then it is divisible by 20957.

The following tests must pass:

• Test if a number is divisible by 19
• The "_ Test" for Divisibility by 1103

Easy!