**Input :** A number // **10**

**Output :** An array // **[2, 5]**

#### Logic :

Key here is that we need to check the divisor starting with

`2`

to thesquare root of the input number.

- Divide the number with
`2`

till the remainder is not`0`

.- If its divisible with
`2`

then`2`

to the primeFactors array.

- If its divisible with
- Divide the number starting with
`3`

till the**square root of the input number**.- If its divisible with
`number`

then add to the primeFactors array.

- If its divisible with
- At the end of the for loop if the number is greater than
`2`

then add the`number`

to the primeFactors array.