Factor Tree of 644

Given number is 644
The factor tree of 644 is as follows:

	644
2		322
	2		161
		7		23

644 = 2 x 322

322 = 2 x 161

161 = 7 x 23

If we write into multiples it would be 644 x 2

On splitting 322 further and writing it as multiples of numbers it would be 161 x 2.

On splitting 161 further and writing it as multiples of numbers it would be 23 x 7.

Here are examples of Factor tree calculations.

• Factor Tree of 649
• Factor Tree of 654
• Factor Tree of 659
• Factor Tree of 664
• Factor Tree of 669

Here we are providing different methods to find the factors of the number 644. They are splitting numbers and prime factors.

Splitting Numbers

We can divide the number into either of its two factors. In other words, we are looking for the numbers that when multiplied together eqaul 644. Let’s start with 2 x 2 x 7 x 23 as it results in 644 on multiplying. We will now find the factors or ancestors of split factors, just like in any family tree.

Prime Factors

Let’s take a look at 644 now and we can write as 2 x 2 x 7 x 23 and place those factors on the tree. similarly to prime numbers obtained in the first step 2, 2, 7, 23 obtained here are also prime numbers and we will end up these branches.

1. What is factor tree for 644 ?

Answer: Prime Factors of 644 are 2 x 2 x 7 x 23.

2. What are the Prime Factors of 644 ?

Answer: Prime Factors of 644 are 2 x 2 x 7 x 23.