# R Program to check a number is prime or not

In this program, You will learn how to check a number is prime or not in R.

```
while(condition){
#Statement
#Increment/Decrement
}
```

## Example: How to check a number is prime or not in R

```
{
n = as.integer(readline(prompt = "Enter a number :"))
f = 1
i = 2
while (i <= n / 2) {
if (n %% i == 0) {
f = 0
break
}
i = i + 1
}
if (f == 1) {
print(paste("Number is prime :", n))
} else{
print(paste("Number is not prime :", n))
}
}
```

#### Output:

```
Enter a number :7
[1] "Number is prime : 7"
```