188 (number)

← 187 188 189 →
Cardinalone hundred eighty-eight
Ordinal188th
(one hundred eighty-eighth)
Factorization22 × 47
Greek numeralΡΠΗ´
Roman numeralCLXXXVIII
Binary101111002
Ternary202223
Senary5126
Octal2748
Duodecimal13812
HexadecimalBC16

188 (one hundred [and] eighty-eight) is the natural number following 187 and preceding 189.

In mathematics

There are 188 different four-element semigroups,[1] and 188 ways a chess queen can move from one corner of a board to the opposite corner by a path that always moves closer to its goal.[2] The sides and diagonals of a regular dodecagon form 188 equilateral triangles.[3]

In other fields

The number 188 figures prominently in the film The Parallel Street (1962) by German experimental film director Ferdinand Khittl [de]. The opening frame of the film is just an image of this number.[4]

See also

References

  1. ^ Sloane, N. J. A. (ed.). "Sequence A027851 (Number of nonisomorphic semigroups of order n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ^ Sloane, N. J. A. (ed.). "Sequence A132595 (Number of ways to move a chess queen from the lower left corner to square (n,n), with the queen moving only up, right, or diagonally up-right)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^ Sloane, N. J. A. (ed.). "Sequence A238822 (Number of equilateral triangles bounded by the sides and diagonals of a regular 3n-gon)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  4. ^ Möller, Olaf (January–February 2012). "White Noise". Film Comment. 48 (1): 14–15. ProQuest 918706629.
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