Searching for Kaprekar's constants: algorithms and results

Byron L. Walden

International Journal of Mathematics and Mathematical Sciences, 2005, vol. 2005, 1-6

Abstract:

We examine some new results on Kaprekar's constants, specifically establishing the unique 7-digit (in base 4) and 9-digit (in base 5) Kaprekar's constants and showing that there are no 15-, 21-, 27-, or 33-digit Kaprekar's constants.

Date: 2005
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:802780

DOI: 10.1155/IJMMS.2005.2999

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