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Four-digit numbers which are squared sums

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There is a very natural way to divide a four-digit number into 2 two-digit numbers. Applying an algorithm to this pair of numbers, determine how often the original four-digit number reappears.

Keywords: modular arithmetic; number theory; sums of powers

Document Type: Research Article


Affiliations: Department of Mathematics, California State University, Tock, CA, USA

Publication date: 2009-01-01

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