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11A63 - Number theory :: Elementary number theory :: Radix representation; digital problems

  1. Armstrong number owned by CompositeFan
  2. automorphic number owned by CompositeFan
  3. bitwise AND owned by PrimeFan
  4. bitwise NOT owned by PrimeFan
  5. bitwise OR owned by PrimeFan
  6. bitwise XOR owned by PrimeFan
  7. calculator and CAS support for various positional bases owned by PrimeFan
  8. Champernowne's constant owned by PrimeFan
  9. computer representation of integers owned by rm50
  10. Conway's constant owned by PrimeFan
  11. Copeland-Erdős constant owned by Mravinci
  12. corollary of Kummer's theorem owned by Thomas Heye
  13. Demlo number owned by PrimeFan
  14. digit sum owned by PrimeFan
  15. digitaddition generator owned by PrimeFan
  16. digital root owned by PrimeFan
  17. dihedral prime owned by PrimeFan
  18. divisibility of nine-numbers owned by pahio
  19. divisibility test owned by CompositeFan
  20. doubly even number owned by 1and2and4
  21. duodecimal owned by PrimeFan
  22. emirp owned by PrimeFan
  23. equidigital number owned by PrimeFan
  24. examples of 1-automorphic numbers owned by PrimeFan
  25. examples of Demlo numbers owned by PrimeFan
  26. examples of digital roots in a few selected bases owned by PrimeFan
  27. examples of Kaprekar numbers owned by PrimeFan
  28. examples of Keith numbers owned by PrimeFan
  29. examples of palindromic primes owned by PrimeFan
  30. examples of parasitic numbers owned by PrimeFan
  31. examples of polydivisible numbers owned by PrimeFan
  32. examples of self numbers in a few selected bases owned by PrimeFan
  33. examples of Smarandache-Wellin primes in a few selected bases owned by PrimeFan
  34. examples of trimorphic numbers owned by PrimeFan
  35. examples of uniqueness of digital representation of small numbers in a few bases owned by PrimeFan
  36. expressing fractions in factorial base owned by rspuzio
  37. extravagant number owned by PrimeFan
  38. factorial base owned by CompositeFan
  39. factorial base representation of fractions owned by rspuzio
  40. factorion owned by CompositeFan
  41. Feynman point owned by PrimeFan
  42. fixed-point arithmetic owned by PrimeFan
  43. Friedman number owned by aplant
  44. frugal number owned by PrimeFan
  45. happy number owned by PrimeFan
  46. Harshad number owned by PrimeFan
  47. hexadecimal owned by PrimeFan
  48. Kaprekar constant owned by PrimeFan
  49. Kaprekar number owned by PrimeFan
  50. Keith number owned by PrimeFan
  51. Kummer's theorem owned by Thomas Heye
  52. least significant digit owned by PrimeFan
  53. Leyland number owned by CompositeFan
  54. look and say sequence owned by PrimeFan
  55. minimal prime owned by PrimeFan
  56. most significant digit owned by PrimeFan
  57. multiplicative digital root owned by CompositeFan
  58. palindromic number owned by CompositeFan
  59. palindromic prime owned by PrimeFan
  60. pandigital number owned by PrimeFan
  61. parasitic number owned by CompositeFan
  62. permutable prime owned by PrimeFan
  63. polydivisible number owned by CompositeFan
  64. proof that every positive integer has a Zeckendorf representation owned by PrimeFan
  65. proof that number of sum-product numbers in any base is finite owned by rspuzio
  66. proof that the set of sum-product numbers in base 10 is finite owned by PrimeFan
  67. proof that the set of sum-product numbers in base 2 is finite owned by Mravinci
  68. proof that the Zeckendorf representation of a positive integer is unique owned by PrimeFan
  69. repdigit owned by CompositeFan
  70. repunit owned by PrimeFan
  71. scientific notation owned by PrimeFan
  72. self number owned by CompositeFan
  73. self-descriptive number owned by PrimeFan
  74. sequences b^{2n}-1 and b^{2n-1}+1 are divisible by b+1 owned by perucho
  75. singly even number owned by CompositeFan
  76. Sloane's conjecture on multiplicative digital root owned by CompositeFan
  77. Smarandache-Wellin number owned by CompositeFan
  78. Smarandache-Wellin prime owned by PrimeFan
  79. Smith number owned by CompositeFan
  80. some examples of Friedman numbers in Roman numerals owned by Mravinci
  81. strictly non-palindromic number owned by PrimeFan
  82. strobogrammatic number owned by CompositeFan
  83. strobogrammatic prime owned by PrimeFan
  84. sum-product number owned by Mravinci
  85. surd owned by mathwizard
  86. trimorphic number owned by CompositeFan
  87. unambiguity of factorial base representation owned by rspuzio
  88. uniqueness of digital representation owned by pahio
  89. vampire number owned by CompositeFan
  90. Zeckendorf's theorem owned by CompositeFan
  91. Zuckerman number owned by CompositeFan

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