In the tutorial there is an example for finding prime numbers:

```
>>> for n in range(2, 10):
... for x in range(2, n):
... if n % x == 0:
... print(n, 'equals', x, '*', n//x)
... break
... else:
... # loop fell through without finding a factor
... print(n, 'is a prime number')
...
```

I understand that the double `==`

is a test for equality, but I don't understand the `if n % x`

part. Like I can verbally walk through each part and say what the statement does for the example. But I don't understand how the percentage sign falls in.

What does `if n % x`

actually say?