Hi, As a coder (mainly c++) for many years, I've been getting more and more interested and fascinated by numbers, and in my spare time I'm doing a lot of coding of integer algorithms, trying to get them as fast as possible and discovering lots of interesting things about numbers, ... but I'm often getting stuck and having to google about number theory a LOT .... (I have no real maths training above school Im afraid so my notation may be inaccurate!).. SO... Having just found this site I'm going to post up any questions I have... (don't know if I can answer anybody else's questions but hey-ho I'll try.... ). Cheers.