Greetings! It has come to my attention that Marcus du Sautoy is presenting an exciting tripartite TV programme about mathematics, starting from this Wednesday (27th July): http://www.bbc.co.uk/tv/features/code/ There's also a code challenge running parallel to the series, for those cryptanalysts amongst you. Indeed, I hear that a group of you had fascinating sessions in the Birmingham camp, such as one about the RSA cipher. If you want to try another RSA cipher yourself, that would be 2429528048. (n = 4294967297, e = 17. This time, I have actually encrypted the message! : ) Have fun! Sincerely, Adam P. Goucher