273 (number)

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273 (two hundred [and] seventy-three) is the natural number following 272 and preceding 274.

← 272 273 274 →
Cardinal two hundred seventy-three
Ordinal 273rd
(two hundred seventy-third)
Factorization 3 × 7 × 13
Greek numeral ΣΟΓ´
Roman numeral CCLXXIII, cclxxiii
Binary 1000100012
Ternary 1010103
Senary 11336
Octal 4218
Duodecimal 1A912
Hexadecimal 11116

273 is a sphenic number, a truncated triangular pyramid number [1] and an idoneal number. There are 273 different ternary trees with five nodes. [2]

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References

  1. ↑ Sloane, N. J. A. (ed.). "SequenceA051937(Truncated triangular pyramid numbers))". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  2. ↑ Sloane, N. J. A. (ed.). "SequenceA001764(Binomial(3n,n)/(2n+1) (enumerates ternary trees and also noncrossing trees))". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.


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