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

I don't understand why this error occurs? Can someone please help? Thanks!

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