Is 139 a Prime Number

To determine whether the number 139 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 139 evenly, meaning without leaving a remainder. If such divisors exist, 139 is not a prime number; otherwise, it would be classified as prime.

To quickly check if 139 is a prime number:

Calculate the square root of 139

$\sqrt{139} = 11.79$

Prime numbers less than or equal to 11.79: 2, 3, 5, 7, 11

• 139 is not divisible by number: 2, 3, 5, 7, 11.

Since 139 is not divisible by any number other than 1 and itself, it is a prime number.