Factors of 809: Prime Factorization, Methods, and Examples

The number 809 is prime. A prime number has just two factors, one of which is itself, making it the number 809. 

Factors Of 809

These two are the only numbers that, when divided by 809, result in an integer number with non-zero places and no remainder.

Factors of 809

Here are the factors of number 809.

Factors of 809: 1 and 809

Negative Factors of 809

The negative factors of 809 are similar to their positive aspects, just with a negative sign.

Negative Factors of 809: -1 and -809

Prime Factorization of 809

The prime factorization of 809 is the way of expressing its prime factors in the product form.

Prime factorization of eight hundred and nine

Prime Factorization: 1 x 809

In this article, we will learn about the factors of 809 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

What Are the Factors of 809?

The factors of 809 are 1 and 809. These numbers are the factors as they do not leave any remainder when divided by 809.

The factors of 809 are classified as prime numbers and composite numbers. The prime factors of the number 809 can be determined using the prime factorization technique.

How To Find the Factors of 809?

You can find the factors of 809 by using the rules of divisibility. The divisibility rule states that any number, when divided by any other natural number, 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 809, create a list containing the numbers that are exactly divisible by 809 with zero remainders. One important thing to note is that 1 and 809 are the 809’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 809 are determined as follows:

\[\dfrac{809}{1} =809\]

\[\dfrac{809}{809} = 1\]

Therefore, 1 and 809 are the factors of 809.

Total Number of Factors of 809

For 809, there are 2 positive factors and 2 negative ones. So in total, there are 4 factors of 809. 

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

  1. Find the factorization/prime 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 809 is given as:

Factorization of 809 is 1 x 809.

The exponent of 1 and 809 is 1.

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

Therefore, the total number of factors of 809 is 4. 2 are positive, and 2 factors are negative.

Important Notes

Here are some essential 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, the smallest prime factor.

Factors of 809 by Prime Factorization

The number 809 is a prime number. Prime factorization is a valuable technique for finding the number’s prime factors and expressing the number as the product of its prime factors.

Before finding the factors of 809 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 809, start dividing by its most minor 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 809 can be expressed as:

809 = 1 x 809

Factors of 809 in Pairs

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

Pairs of eight hundred and nine

For 809, the factor pairs can be found as:

1 x 809 = 809

The possible factor pairs of 809 are given as (1, 809).

All these numbers in pairs, when multiplied, give809 as the product.

The negative factor pairs of 809 are given as:

-1 x -809 = 809

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 -809 are called negative factors of 809.

The list of all the factors of 809, including positive as well as negative numbers, is given below.

Factor list of 809:  1, -1, 809, and -809

Factors of 809 Solved Examples

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

Example 1

How many factors of 809 are there?


The total number of Factors of 809 is 4.

Factors of 809 are 1 and 809.

Example 2

Find the factors of 809 using prime factorization.


The prime factorization of 809 is given as:

809 $\div$ 1 = 809

809 $\div$ 809 = 1 

So the prime factorization of 809 can be written as:

 1 x 809 = 809

Factors of 808|Factors List| Factors of 810