Divisor 6811

To determine if any number is divisible by 6811, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 49 and 139 - then it is divisible by 6811.

The following tests must pass:

• Test if a number is divisible by 49
• Test if a number is divisible by 139

Easy!