Electronic Proceedings of the Twenty-first Annual International Conference on Technology in Collegiate Mathematics

New Orleans, Louisiana, March 12-15, 2009

Paper C002

This is an electronic reprint, reproduced by permission of Pearson Education Inc. Originally appeared in the Proceedings of the Twenty-first Annual International Conference on Technology in Collegiate Mathematics, ISBN 0-321-68983-6, Copyright (C) 2010 by Pearson Education, Inc.


Accessing Primes and Exponents from the TI-89 Factor Command

Joseph Fadyn


Southern Polytechnic State University

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ABSTRACT

The author presents a utility program that efficiently produces a list of the primes and exponents in the prime power factorization of a positive integer as well as applications of the program to produce the Euler phi function, the number of divisors function, and the sum of the divisors function.

Keyword(s): number theory, TI-89