# Prime Factors of 891

Prime Factors of 891 are 3, 3, 3, 3, and 11

#### How to find prime factors of a number

 1.   Prime Factorization of 891 by Division Method 2.   Prime Factorization of 891 by Factor Tree Method 3.   Definition of Prime Factors 4.   Frequently Asked Questions

#### Steps to find Prime Factors of 891 by Division Method

To find the primefactors of 891 using the division method, follow these steps:

• Step 1. Start dividing 891 by the smallest prime number, i.e., 2, 3, 5, and so on. Find the smallest prime factor of the number.
• Step 2. After finding the smallest prime factor of the number 891, which is 3. Divide 891 by 3 to obtain the quotient (297).
891 ÷ 3 = 297
• Step 3. Repeat step 1 with the obtained quotient (297).
297 ÷ 3 = 99
99 ÷ 3 = 33
33 ÷ 3 = 11
11 ÷ 11 = 1

So, the prime factorization of 891 is, 891 = 3 x 3 x 3 x 3 x 11.

#### Steps to find Prime Factors of 891 by Factor Tree Method

We can follow the same procedure using the factor tree of 891 as shown below:

So, the prime factorization of 891 is, 891 = 3 x 3 x 3 x 3 x 11.

#### Introduction to Prime Factors?

In mathematics, prime numbers are defined as all those natural numbers greater than 1 that has only two divisors one being number 1 and the other being the number itself. When we express any number as the products of these prime numbers than these prime numbers become prime factors of that number. Eg- Prime Factors of 891 are 3 x 3 x 3 x 3 x 11.

#### Properties of Prime Factors

• For any given number there is one and only one set of unique prime factors.
• 2 is the only even prime number. So, any given number can have only one even prime factor and that is 2.
• Two prime factors of a given number are always coprime to each other.
• 1 is neither a prime number nor a composite number and also 1 is the factor of every given number. So, 1 is the factor of 891 but not a prime factor of 891.

• Which is the smallest prime factor of 891?

Smallest prime factor of 891 is 3.

• Is 891 a perfect square?

No 891 is not a perfect square.

• What is the prime factorization of 891?

Prime factorization of 891 is 3 x 3 x 3 x 3 x 11.

• What is prime factorization of 891 in exponential form?

Prime factorization of 891 in exponential form is 34 x 11.

• Is 891 a prime number?

false, 891 is not a prime number.

• Which is the largest prime factors of 891?

The largest prime factor of 891 is 11.

• What is the product of all prime factors of 891?

Prime factors of 891 are 3 x 3 x 3 x 3 x 11. Therefore, their product is 891.

• What is the sum of all odd prime factors of 891?

Prime factors of 891 are 3 , 3 , 3 , 3 , 11, out of which 3 , 3 , 3 , 3 , 11 are odd numbers. So, the sum of odd prime factors of 891 is 3 + 3 + 3 + 3 + 11 = 23.

• What is the product of all odd prime factors of 891?

Prime factors of 891 are 3 , 3 , 3 , 3 , 11, out of which 3 , 3 , 3 , 3 , 11 are odd numbers. So, the product of odd prime factors of 891 is 3 x 3 x 3 x 3 x 11 = 891.