In this program, You will learn how to find the sum of prime numbers between 1 to n in R.

```
Prime numbers: 2, 3, 5, 7, 11, 13, 17, 19
Sum of Prime numbers: 2 + 3 = 5
```

## Example: How to find the sum of prime numbers between 1 to n in R

```
{
n = as.integer(readline(prompt = "Enter a number :"))
s=0
for (j in 2:n) {
f = 1
i = 2
n = j
while (i <= n / 2) {
if (n %% i == 0) {
f = 0
break
}
i = i + 1
}
if (f == 1) {
s=s+n
}
}
print(paste("The sum of all prime 1 to n :",s))
}
```

#### Output:

```
Enter a number :4
[1] "The sum of all prime 1 to n : 5"
```