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Drieëntwintig

23

..of dit bijzonder is weet ik nog niet:

232+233=23·3·232

Maar daarover later meer...

23 is the smallest number of integer-sided boxes that tile a box so that no two boxes share a common length...

23


XXIII


viginti tria


vicesimus tertius


  • 23 has the unique representation 23 = 12+22+32+32 as a sum of 4 squares.
  • 23 is a Germain prime, since 2×23+1 = 47 is also prime.
  • control-W
    ASCII: 23 (hex: 17 | octal: 0027 | binary: 00010111)
    Unicode: U+0017 (decimal: 23)
    (basic Latin)

Wolfram Alphaq1753img1.gif

$23^{23}$=$20880467999847912034355032910567$ en dat bestaat uit 23 cijfers...

q1753img2.gif

((2*3)*4)-1 = 23
((2*4)*3)-1 = 23
((3*2)*4)-1 = 23
((3*4)*2)-1 = 23
((4*2)*3)-1 = 23
((4*3)*2)-1 = 23

Zie ook

In het artikel 'Weg van Getallen' staat:

  • "Het aantal partities van alle 115000-vouden plus 3474 deelbaar zijn door 23.".

The sum of the first 23 primes is 874, which is divisible by 23, a property shared by few other numbers.

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