# Kotlin program to print all prime factors of given number

Kotlin | printing prime factors: Here, we are going to learn how to print all prime factors of a given number in Kotlin?
Submitted by IncludeHelp, on April 17, 2020

Prime factors are factors of a number which are prime numbers.

Given an integer number, we have to print it's all prime factors.

Example:

```    Input:
50

Output:
2, 5
```

In the below program, we are creating a Kotlin program to print all prime factors of the given number.

### Program to print all prime factors of given number in Kotlin

```package com.includehelp.basic

import java.util.*

/**
* Function to find prime factor for supplied number
* @param number
* @return
*/
fun getPrimeFactors(number: Long): String {
var number = number
//set not Allowed Duplicate element
val setPrimeFactors: MutableSet<Int> = HashSet()
var i = 2
while (i <= number) {
if (number % i == 0L) {
// Add prime factor in Hash Set
number /= i
i--
}
i++
}
return setPrimeFactors.toString()
}

//Main Function entry Point of Program
fun main(args: Array<String>) {
val sc = Scanner(System.`in`)

println("Enter Number  : ")
val number: Int = sc.nextInt()       // Input Number

//Print Primary Factor
println("Prime Factors of  \$number  is :  \${getPrimeFactors(number.toLong())} ")
}
```

Output

```Run 1:
Enter Number  :
50
Prime Factors of  50  is :  [2, 5]
-------
Run 2:
Enter Number  :
345345
Prime Factors of  345345  is :  [3, 5, 7, 23, 11, 13]
```