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Three Years Of Computing: Final Report on the Palindrome Quest

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Visit this site: http://www.fourmilab.to/documents/threeyears/threeyears.html

Author:John Walker
Description: "Pick a number. Reverse its digits and add the resulting number to the original number. If the result isn't a palindrome, repeat the process. Do all numbers in base 10 eventually become palindromes through this process? Nobody knows." The story of a program to test the number 196, which ran from 1987 to 1990. Download the C source code or the million-digit number that the program stopped at, or read Tim Irvin's "About Two Months of Computing", which brought the record to two million digits.

Levels: High School (9-12)
Languages: English
Resource Types: Articles, Archives/Download Sites
Math Topics: Addition, Number Sense/About Numbers, Algorithms, Computer Science

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