perplexus.info :: Just Math : Equal digit sum

Equal digit sum (Posted on 2012-11-22)

Find all integers n such that S(n) = S(2n) = ... = S(n*n), where S is the sum of the base-10 digits.

No Solution Yet Submitted by Danish Ahmed Khan

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Subject	Author	Date
re: The first answer (spoiler)	Ady TZIDON	2012-11-22 16:26:53
re: computer exploration--no proof	Charlie	2012-11-22 12:14:06
computer exploration--no proof	Charlie	2012-11-22 12:08:45
The first answer (spoiler)	Steve Herman	2012-11-22 12:01:25

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