Talk:Narcissistic decimal number

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Revision as of 08:25, 7 March 2014 by rosettacode>Gerard Schildberger (added some comments about the 1st narcissistic numbers, definition, and other names.)
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task clarification

According to this task's link to Wolfram MathWorld (TM), a narcissistic number is an N-digit number whose ...

The first narcissistic number is 0 (zero).

According to OEIS (The On-line Encyclopedia of Integer Sequences (R)), the first narcissistic number is 0 (zero).

This would change what numbers are listed when displaying 25 narcissistic numbers.

I would prefer mentioning that narcissistic numbers are non-negative integers.   After all, 15.3 is a decimal number.

Also, for those searching for Armstrong numbers, maybe a note saying:

Narcissistic numbers are also known as:

  • Armstrong numbers
  • perfect digital invariant (Madachy 1979)
  • plus perfect numbers (Hardy 1993)

Narcissistic numbers are similar to powerful numbers. &nbsp: Powerful are numbers that are equal to some fixed (integer) power of their digits.

The list of narcissistic numbers is finite (88).

-- Gerard Schildberger (talk) 08:25, 7 March 2014 (UTC)