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2. Narcissistic number - Wikipedia

   en.wikipedia.org/wiki/Narcissistic_number

   In number theory, a narcissistic number [1] [2] (also known as a pluperfect digital invariant (PPDI), [3] an Armstrong number [4] (after Michael F. Armstrong) [5] or a plus perfect number) [6] in a given number base is a number that is the sum of its own digits each raised to the power of the number of digits.

3. List of recreational number theory topics - Wikipedia

   en.wikipedia.org/wiki/List_of_recreational...

   This is a list of recreational number theory topics (see number theory, recreational mathematics). Listing here is not pejorative : many famous topics in number theory have origins in challenging problems posed purely for their own sake.

4. Quinary - Wikipedia

   en.wikipedia.org/wiki/Quinary

   Quinary (base 5 or pental [1] [2] [3]) is a numeral system with five as the base.A possible origination of a quinary system is that there are five digits on either hand.. In the quinary place system, five numerals, from 0 to 4, are used to represent any real number.

5. Repdigit - Wikipedia

   en.wikipedia.org/wiki/Repdigit

   A variation of repdigits called Brazilian numbers are numbers that can be written as a repdigit in some base, not allowing the repdigit 11, and not allowing the single-digit numbers (or all numbers will be Brazilian). For example, 27 is a Brazilian number because 27 is the repdigit 33 in base 8, while 9 is not a Brazilian number because its ...

6. Senator says Trump cannot ignore law requiring ByteDance to ...

   www.aol.com/news/senator-says-trump-cannot...

   WASHINGTON (Reuters) -President-elect Donald Trump cannot ignore a law requiring Chinese-based ByteDance to divest its popular short video app TikTok in the U.S. by early next year or face a ban ...

7. 25 Unconventional Pets Owned by Celebrities - AOL

   www.aol.com/lifestyle/25-unconventional-pets...

   Being a celebrity can be tough. All of the adulation and constant media attention can take its toll. It’s not surprising that some celebrities take solace in the company of animals to give them ...