## priorprime

### Instructions

You are given an integer.
Your function must return sum of all prime numbers prior to the number exclusively. The number is not included.

### Expected function and structure

```go
package main

func PriorPrime(x int) int {

}
```

### Usage

Here is a possible program to test your function:

```go
package main

import "fmt"

func main() {
	fmt.Println(PriorPrime(14))
}

```

Its output:

```console
student@ubuntu:~/[[ROOT]]/test$ go build
student@ubuntu:~/[[ROOT]]/test$ ./priorprime
41
student@ubuntu:~/[[ROOT]]/test$
```