# Prime Factors of 42

Prime Factors Calculator breaks down the composite number 42 into factors of the composite number until all the numbers are prime.

Prime factors of 42 are all the prime numbers when multiplied together equals to 42. Prime factors of 42 are those that divide 42 exactly without leaving a remainder as per Euclidean Division.

Factors of:

### Prime Decomposition of 42

Another popular method to find prime factorisation is known as prime decomposition and it includes the use of a factor tree. The factor tree diagram is an easy process to divide a number into its prime factors. To create a factor tree we have to break down the composite number into factors of the composite number till the numbers are prime.

There might be various methods to show the factor tree for any provided prime factorisation.

 42 2 21 3 7 Explore more about Factor Tree of 42 by accessing this link and make your calculations quick & fast by using our handy Factor Tree Calculator.

### Trial Division of 42

One of the methods to check the Prime Factor of a number is trial division. Trial division consists of very easy and basic algorithms, though it is an extremely slow process. In this method, we have to check each number by dividing the composite number in question by the integer and deciding if, and how many times, the number can divide the number equally.

To get the prime factorisation of 42, we have to start with dividing it by primes

42 ÷ 21 = 2

21 ÷ 7 = 3

7 ÷ 1 = 7

So here he prime factorisation of 42 = 2 x 3 x 7 = 21 x 31 x 71

We can check it in a prime factorisation calculator also. The algorithm used in the calculator and trial division may differ but the result is always the same.

### How to find Prime Factors of 42?

The process of finding Prime Factors is called Prime Factorization of 42. In order to get the Prime factors of 42, divide the number 42 with the smallest prime numbers. Continue the process until you end up with 1.

All the numbers you used to divide above are the Prime Factors of 42. Thus, the Prime Factors of 42 are 2, 7, 3.

### Prime Factorization Calculations

Here are examples of Prime Factorization calculations.

### Frequently Asked Questions on Prime Factorisation of 42

1. What is Prime Factorization Method?

Answer: The method of prime factorization is used to “break down” or express a given number as a product of prime numbers.

2. How do you find the prime factors of a number?

Answer: Divide the number given with the smallest prime numbers and continue the process until you end up with 1.

3. What are the Prime Factors of 42?

Answer: Prime Factors of 42 are 2, 7, 3, and usually expressed as 2 x 3 x 7.

4. What are the Factors of 42?

Answer: Factors of 42 are the numbers that can divide 42 and leaves a remainder zero. Factors include 1, 2, 3, 6, 7, 14, 21, 42.