Divisibility Checker
Check whether a number is divisible by 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11.
How It Works
Enter a positive integer. The tool tests divisibility by 2 through 11 and shows which divisors apply, along with the divisibility rule for each.
Formula
N is divisible by d if N mod d = 0.
Frequently Asked Questions
How do I check divisibility by 3?
A number is divisible by 3 if the sum of its digits is divisible by 3.
How do I check divisibility by 11?
Alternate the signs of the digits and sum them. If the result is divisible by 11, so is the number.