List of recreational number theory topics
From Infogalactic: the planetary knowledge core
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.
See list of number theory topics for pages dealing with aspects of number theory with more consolidated theories.
Number sequences
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- Integer sequence
- Fibonacci sequence
- Lucas sequence
- Padovan sequence
- Figurate numbers
- Polygonal number
- Centered polygonal number
- Tetrahedral number
- Pyramidal number
- Octahedral number
- Star number
- Perfect number
- Amicable number
- Sociable number
- Abundant number
- Deficient number
- Amenable number
- Aliquot sequence
- Super-Poulet number
- Lucky number
- Happy number
- Powerful number
- Primeval number
- Palindromic number
- Automorphic number
- Triangular square number
- Polydivisible number
- Harmonic divisor number
- Sphenic number
- Keith number
- Kaprekar number
- Smith number
- Harshad number
- Double Mersenne number
- Zeisel number
- Heteromecic number
- Niven numbers
- Superparticular number
- Untouchable number
- Self number
- Highly composite number
- Highly totient number
- Practical number
- Armstrong number
- Juggler sequence
- Look-and-say sequence
Digits
- Semiprime
- Almost prime
- Unique prime
- Factorial prime
- Permutable prime
- Palindromic prime
- Cuban prime
- Lucky prime
