# C Exercises: Print all prime factors of a given number

## C Programming Mathematics: Exercise-25 with Solution

Write a C program to print all prime factors of a given number.

Example:

Input: n = 75

Output: All prime factors of 75 are: 3 5 5

**Pictorial Presentation:**

**Sample Solution:**

**C Code:**

```
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
//int n = 8;
int n = 75;
// int n = 18;
printf("All prime factors of %d are: ",n);
if (n>0)
{
while (n%2==0)
{
printf("2 ");
n /= 2;
}
for (int i = 3; i <= sqrt(n); i+= 2)
{
while (n%i == 0)
{
printf("%d ",i);
n /= i;
}
}
if (n > 2)
printf("%d ",n);
}
return 0;
}
```

Sample Output:

All prime factors of 75 are: 3 5 5

**Flowchart: **

**C Programming Code Editor:**

**Improve this sample solution and post your code through Disqus.**

**Previous:** Write a C program to calculate e raise to the power x using sum of first n terms of Taylor Series.

**Next:** Write a C program to check if a given number is Fibonacci number or not.

**What is the difficulty level of this exercise?**

Test your Programming skills with w3resource's quiz.

**Weekly Trends**- Python Interview Questions and Answers: Comprehensive Guide
- Scala Exercises, Practice, Solution
- Kotlin Exercises practice with solution
- MongoDB Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - JOINS
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join