Drexel dragonThe Math ForumDonate to the Math Forum

The Math Forum Internet Mathematics Library

Keith Numbers

_____________________________________
Library Home || Full Table of Contents || Suggest a Link || Library Help
_____________________________________

Visit this site: http://users.aol.com/s6sj7gt/mikekeit.htm

Author:Mike Keith
Description: A Keith number is an n-digit integer N with the following property: If a Fibonacci-like sequence (in which each term in the sequence is the sum of the n previous terms) is formed, with the first n terms being the decimal digits of the number N, then N itself occurs as a term in the sequence. Keith numbers are all known up to 10^19. Can you find the next one? A recreational mathematics problem related to recurrent sequences and Diophantine equations.

Levels: College
Languages: English
Math Topics: Number Theory

[Privacy Policy] [Terms of Use]

_____________________________________
Home || The Math Library || Quick Reference || Search || Help
_____________________________________

© 1994-2014 Drexel University. All rights reserved.
http://mathforum.org/
The Math Forum is a research and educational enterprise of the Goodwin College of Professional Studies.The Math Forum is a research and educational enterprise of the Drexel University School of Education.