Prime Factors of 84

Steps to find Prime Factors of 84 by Division Method

To find the primefactors of 84 using the division method, follow these steps:

• Step 1. Start dividing 84 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 84, which is 2. Divide 84 by 2 to obtain the quotient (42).
  84 ÷ 2 = 42
• Step 3. Repeat step 1 with the obtained quotient (42).
  42 ÷ 2 = 21
  21 ÷ 3 = 7
  7 ÷ 7 = 1

So, the prime factorization of 84 is, 84 = 2 x 2 x 3 x 7.

Steps to find Prime Factors of 84 by Factor Tree Method

We can follow the same procedure using the factor tree of 84 as shown below:

So, the prime factorization of 84 is, 84 = 2 x 2 x 3 x 7.

What does Prime factor of a number mean?

A prime number in mathematics is defined as any natural number greater than 1, that is not divisible by any number except 1 and the number itself. When we express any number as the product of these prime numbers than these prime numbers become prime factors of that number. Eg- Prime Factors of 84 are 2 x 2 x 3 x 7.

Properties of Prime Factors

• For any given number there is one and only one set of unique prime factors.
• Any number can have only 1 even prime factor and that is number 2.
• Two prime factors are always coprime to each other.
• 1 is the factor of any given number, but 1 is neither a prime number nor a composite number. So, 1 is the factor of 84 but not a prime factor of 84.

Frequently Asked Questions

• Which is the smallest prime factor of 84?

  Smallest prime factor of 84 is 2.

• What is the prime factorization of 84?

  Prime factorization of 84 is 2 x 2 x 3 x 7.

• What are the factors of 84?

  Factors of 84 are 1 , 2 , 3 , 4 , 6 , 7 , 12 , 14 , 21 , 28 , 42 , 84.

• Is 84 a prime number or a composite number?

  84 is a composite number.

• Is 84 a prime number?

  false, 84 is not a prime number.

• Which is the largest prime factors of 84?

  The largest prime factor of 84 is 7.

• What is the sum of all prime factors of 84?

  Prime factors of 84 are 2 x 2 x 3 x 7. Therefore, their sum is 14.

• What numbers are the prime factors of 84?

  Prime factors of 84 are 2 , 2 , 3 , 7.

• What is the sum of all odd prime factors of 84?

  Prime factors of 84 are 2 , 2 , 3 , 7, out of which 3 , 7 are odd numbers. So, the sum of odd prime factors of 84 is 3 + 7 = 10.