Student: Franque Bains Professor: Dr. Mike Krebs Degree Objective: Bachelor of Science Major: Mathematics Title: “Fixed points of number derivatives modulo n” Abstract A number derivative is a function that satisfies the Product Rule. In this paper, we find all solutions to the equation (x) = x, where is a number derivative on the ring of integers modulo an integer n. Thinking of number derivatives as analogues of the ordinary derivative from Calculus, we can think of this equation as a differential equation" of sorts; solutions to it will then be rough analogues of exponential functions.