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A special short-list (Posted on 2015-12-08) Difficulty: 3 of 5
Some integers are one more than the sum of the squares of their digits in base 10.

Prove that the set of such integers is finite and list all of them.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
SolutionAnalytical solutionJer2015-12-08 11:25:09
Solutionsolution with computer-generated listCharlie2015-12-08 10:45:22
Low hanging fruitSteve Herman2015-12-08 09:45:49
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