I have re-arranged this every way to Sunday but I always get the error "fails on 0, returns false when it should return false"? I haven't noticed this in other posts so far.

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