# How do you find the prime factorization of 196?

##### 2 Answers

#### Explanation:

As the last two digits in

Dividing by

but factors of

Hence prime factors of

**Note** : This method of factorization, in which we first find identifiable factors and then proceed until all prime factors are known is called **tree method**. This is graphically described below.

#### Explanation:

It is really useful to know the square numbers up to

You would then recognise

If you do not know the square numbers, you have to work it out by dividing by the prime factors.