Factors of 149: Prime Factorization, Methods, and Examples

The factors of 149 are the numbers upon which the number 149 is completely divisible, meaning that these numbers leave zero as a remainder when 149 is divided from them.

Factors Of 149

Since 149 is a prime number so there are only 2 factors of 149, one being the number one and the other being the number 149 itself. 

Factors of 149

Here are the factors of number 149.

Factors of 149: 1, 149

Negative Factors of 149

The negative factors of 149 are similar to its positive factors, just with a negative sign.

Negative Factors of 149: -1 and -149

Prime Factorization of 149

The prime factorization of 149 is the way of expressing its prime factors in the product form.

Prime Factoriazation of one hundred and forty nine 1


Prime Factorization: 1 x 149

In this article, we will learn about the factors of 149 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

What Are the Factors of 149?

The factors of 149 are 1 and 149. All of these numbers are the factors as they do not leave any remainder when divided by 149.

The factors of 149 are classified as prime numbers and composite numbers. The prime factors of the number 149 can be determined using the technique of prime factorization.

How To Find the Factors of 149?

You can find the factors of 149 by using the rules of divisibility. The rule of divisibility states that any number when divided by any other natural number then it is said to be divisible by the number if the quotient is the whole number and the resulting remainder is zero.

To find the factors of 149, create a list containing the numbers that are exactly divisible by 149 with zero remainders. One important thing to note is that 1 and 149 are the 149’s factors as every natural number has 1 and the number itself as its factor.

1 is also called the universal factor of every number. The factors of 149 are determined as follows:

\[\dfrac{149}{1} = 149\]

\[\dfrac{149}{149} = 1\]

Therefore, 1 and 149 are the factors of 149.

Total Number of Factors of 149

For 149 there are 2 positive factors and 2 negative ones. So in total, there are 4 factors of 149. 

To find the total number of factors of the given number, follow the procedure mentioned below:

  1. Find the factorization of the given number.
  2. Demonstrate the prime factorization of the number in the form of exponent form.
  3. Add 1 to each of the exponents of the prime factor.
  4. Now, multiply the resulting exponents together. This obtained product is equivalent to the total number of factors of the given number.

By following this procedure the total number of factors of 149 is given as:

The factorization of 149 is 1 x 149.

The exponent of 1 and 149 is 1.

Adding 1 to each and multiplying them together results in 4.

Therefore, the total number of factors of 149 is 4, where 2 are positive factors and 2 are negative.

Important Notes

Here are some important points that must be considered while finding the factors of any given number:

  • The factor of any given number must be a whole number.
  • The factors of the number cannot be in the form of decimals or fractions.
  • Factors can be positive as well as negative.
  • Negative factors are the additive inverse of the positive factors of a given number.
  • The factor of a number cannot be greater than that number.
  • Every even number has 2 as its prime factor which is the smallest prime factor.

Factors of 149 by Prime Factorization

The number 149 is a prime number. Prime factorization is a useful technique for finding the number’s prime factors and expressing the number as the product of its prime factors.

Before finding the factors of 149 using prime factorization, let us find out what prime factors are. Prime factors are the factors of any given number that are only divisible by 1 and themselves.

To start the prime factorization of 149, start dividing by its smallest prime factor. First, determine that the given number is either even or odd. If it is an even number, then 2 will be the smallest prime factor.

Continue splitting the quotient obtained until 1 is received as the quotient. The prime factorization of 149 can be expressed as:

 149 = 1 x 149

Factors of 149 in Pairs

The factor pairs are the duplet of numbers that when multiplied together result in the factorized number. Depending upon the total number of factors of the given numbers, factor pairs can be more than one.

Pairs of one hundred and forty nine 2



For 149, the factor pairs can be found as:

1 x 149 = 149

The possible factor pairs of 149 are given as (1, 149).

All these numbers in pairs, when multiplied, give 149 as the product.

The negative factor pairs of 149 are given as:

-1 x -149 = 149

It is important to note that in negative factor pairs, the minus sign has been multiplied by the minus sign due to which the resulting product is the original positive number. Therefore, -1 and -149 are called negative factors of 149.

The list of all the factors of 149 including positive as well as negative numbers is given below.

Factor list of 149: 1, -1, 149, and -149

Factors of 149 Solved Examples

To better understand the concept of factors, let’s solve some examples.

Example 1

How many factors of 149 are there?


The total number of Factors of 149 is 2.

Factors of 149 are 1 and 149.

Example 2

Find the sum of the factors of 149.


The sum of the factors of 149 is given below:

Sum = 1 + 149 

Sum = 150

So the factors of 149 have a sum of 150.

Factors of 148 |Factors List |Factors of 150