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Talk:Digital sum

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Latest comment: 20 years ago by Anton Mravcek

While I think the topic definitely deserves an article, I wonder whether "digital sum" is really the standard name for this operation? Casual googling seems to suggest that the digital sum of a number is more commonly taken to be the repeated digit sum, i.e. the decimal digital sum of 782 is computed by 7+8+2=17, 1+7=8 to be 8. AxelBoldt 16:42, 8 May 2004 (UTC)Reply

Yes, you're right. I'll try to correct this article. -- Alex Nisnevich (talk) 21:21, 26 July 2005 (UTC)Reply
Professional mathematicians call it "digital root." Anton Mravcek 22:48, 9 February 2006 (UTC)Reply
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