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

it should return False. because when n iterates through the range. 9 % 3 == 0, which should return False. Idk why it is returning True!!

```
def is_prime(x):
if x < 2:
return False
elif x == 2:
return True
else:
for n in range(2, x):
if x % n == 0:
return False
else:
return True
```