Date: 6 Feb 1995 15:28:25 -0500 From: Anonymous Subject: Palidrome problem The "Reversing Number Algorithm" is: 1. Take a number, add it to its reverse (mirror image) 2. See if the result is a palindrome 3. If not, go back to step 1 and do it again It's thought that most (perhaps all) numbers eventually wind up being palindromes. Have you see any references/results about this problem? Where do you suggest I look in the literature? Are you familiar with any similar problems? Thanks!
Date: 15 Feb 1995 21:09:53 GMT From: Dr. Math Subject: Re: Palidrome problem Hello there! Wow, that's an interesting problem. I've never seen it before. Is this something you thought of yourself (you use the language "it's thought" - by whom?) or did you find this somewhere? You may want to look in the book "Unsolved Problems in Number Theory". Here's its info: AUTHOR Guy, Richard K. Guy, Richard K. Unsolved problems in intuitive mathematics ; v.1 TITLE Unsolved problems in number theory / Richard K. Guy. PUBLISHER New York : Springer-Verlag, c1981. DESCRIPT xviii, 161 p. : ill. ; 25 cm. SUBJECT Number theory --Problems, exercises, etc. SERIES Problem books in mathematics. NOTE Includes bibliographies and indexes. ISBN 0387905936. I hope this isn't a dead end for you; it looks like a neat problem! -Ken "Dr." Math
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