Divisor 23791

To determine if any number is divisible by 23791, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 37 and 643 - then it is divisible by 23791.

The following tests must pass:

• Test if a number is divisible by 37
• Test if a number is divisible by 643

Easy!