# Can a greatest common factor be 1?

##### 2 Answers

Mar 28, 2016

#### Answer:

Yes

#### Explanation:

For example, let

Then

That is, the only 2 factors of

Since

Therefore,

Aug 26, 2016

#### Answer:

It is easily possible to have only 1 as a common factor.

#### Explanation:

Numbers such as 24 and 35 do not have any common factor apart from 1.

Their prime factors are as shown:

In this case the HCF would be 1.

1 is always a factor of every number.