about software.

http://pravalrevealed.wordpress.com/2006/11/24/compress-your-1-gb-data-to-just-10-mb/There is a program called KGB Archiver, you can compress 1 Gb to aprox. 10 Mb but it will take 5-6 hours, there are a few methods of compresion, you can read the details in the link above. Good luck!

A mathematical algorithm like that i don't think exists. Compression is realized using a mathematical algorithm that codes all the files, assigns a value to each other and packs them all together. Anyway it's very complicated. Even if it existed a program of such you cannot compress all files like that because it depends of the files how much compression can they withstand. If compressed that much who knows how the archive will react, and probably if you try to unzip-it you'll get an error. Or not, I have not done this before and thus I can't say how it will react. Still i know it will take a LOT of time.

no, it's to much

does not exist a powerful software therefore of compressione..io use powerarchiver