If you have no experience with other esoteric languages (especially with "Befunge") this programming language might be quite confusing. But don't be scared and check it out. Read the docs on this page and download the stuff. It might change your life :-) or at least it will demage your mind.
#/1-$ $:fo$ ytlucaF#/<\#/;>@#/"1\ \.//<^\#°\=-/ \ .*N6:°/\* /
Calculates the faculty of a entered number. Quits if you enter a number <= 0.
0;>\"`2%°\ / 01-emirP #/<\6N*.) @ \1#/->/1+"'"\ \./ \2°°/>%^`/ # \01-emirP$ on/
Checks if the entered number is a prime, dividing by all numbers < n/2.
Start with the Introduction