Talk:Narcissistic decimal number: Difference between revisions
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-- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 08:25, 7 March 2014 (UTC) |
-- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 08:25, 7 March 2014 (UTC) |
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:Yep. There's work to do on the task description, but hopefully it will not be too confusing until it is updated. --[[User:Paddy3118|Paddy3118]] ([[User talk:Paddy3118|talk]]) 08:48, 7 March 2014 (UTC) |
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Revision as of 08:48, 7 March 2014
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.  : Powerful are numbers that are equal to some fixed (integer) power of their digits.
The list of narcissistic numbers is finite (89).
-- Gerard Schildberger (talk) 08:25, 7 March 2014 (UTC)