memoryerror

Is this the highest number that codecademy can work with? 2238972

I get a memoryerror with anything higher

```
def is_prime(x):
if x <= 1:
return False
a = 0
for n in range(1, x):
if x % n == 0:
a += 1
if a >= 2:
break
else:
return True
return False
print is_prime(2238973)
```