Is 111 a Prime Number?

To determine whether the number 111 is a prime number, it is necessary to check if it has any divisors besides 1 and itself. This involves checking if there are any other numbers that can divide 111 evenly, meaning without leaving a remainder. If such divisors exist, 111 is not a prime number; otherwise, it would be classified as prime.

To quickly check if 111 is a prime number:

Calculate the square root of 111

$\sqrt{111} = 10.54$

Prime numbers less than or equal to 10.54: 2, 3, 5, 7

• 111 is divisible by number: 3, 37.

Since 111 is divisible by a number 3, 37 other than 1 and itself, so it is not a prime number