Question

so iv just started the prime number challenge, please help, basically, im having trouble giving python a command, her is a simple version of the line

while x%y == >0:

this gives me syntax error, im trying to say that, if x/y leaves a remainder, then x=x-1, if not, a+1 and repeat where a is the number being tested.... if that makes any sense? lol

Answer 1

Hi if you want know the simplest way to solve the prime number .. here is the way.
you dont need to check the whole number ,,,just start the for loop from two till you arrive to the half of the number that you are attempting to know if it is prime or not.
here is the example of what i say ...
for(int i=2;x/2;i++)
if(x%i==0)
it is not prime ;
else
it is prime.

Answer 2

you just need if x % y > 0 not ==

Answer 3

pmpn8ez is right, but didn't explain what is wrong with your statement.

== and > are both comparison operations, so you're getting an error.

Section 5.3 of the Python documentation can expand on this if you're interested.
http://docs.python.org/library/stdtypes.html

Hope this helps!

Answer 4

hey, thanks to you both, i sorted it and you were both a big help, if you wouldn't mind taking a look at my new thread about 1b? would reallt be of help, thanks