Oops, try again. Your function fails on is_prime(9). It returns True when it should return False.

For some reason, is_prime(9) returns true which it shouldn't obviously since 9 is divisible by 3. 3 is included though in the range (2, x)...

Can someone help me to detect the error?

```
Replace this line with your code.
def is_prime(x):
if x == 2:
return True
elif x >= 2:
for n in range(2, x):
if x % n == 0:
return False
else:
return True
else:
return False
```