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Champagnat numbers (Posted on 2018-01-23) Difficulty: 4 of 5
A Champagnat number is equal to the sum of all the digits in a set of consecutive positive integers, one of which is the number itself.
Thus, 42 is a Champagnat number, since 42 is the sum of all of the digits of 39, 40, 41, 42, 43, 44.

Prove that there exist infinitely many Champagnat numbers.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
re: a proofJer2018-01-23 16:01:25
Solutiona proofCharlie2018-01-23 15:00:21
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