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273 (number)

From Wikipedia, the free encyclopedia

273 (two hundred [and] seventy-three) is thenatural number following272 and preceding274.

Natural number
← 272273 274 →
Cardinaltwo hundred seventy-three
Ordinal273rd
(two hundred seventy-third)
Factorization3 × 7 × 13
Greek numeralΣΟΓ´
Roman numeralCCLXXIII,cclxxiii
Binary1000100012
Ternary1010103
Senary11336
Octal4218
Duodecimal1A912
Hexadecimal11116

273 is asphenic number,[1] atruncated triangular pyramid number[2] and anidoneal number.[3]There are 273 differentternary trees with five nodes.[4]

References

[edit]
  1. ^Sloane, N. J. A. (ed.)."Sequence A007304 (sphenic number)".TheOn-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ^Sloane, N. J. A. (ed.)."Sequence A051937 (Truncated triangular pyramid numbers))".TheOn-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^Sloane, N. J. A. (ed.)."Sequence A000926 (idoneal number)".TheOn-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  4. ^Sloane, N. J. A. (ed.)."Sequence A001764 (Binomial(3n,n)/(2n+1) (enumerates ternary trees and also noncrossing trees))".TheOn-Line Encyclopedia of Integer Sequences. OEIS Foundation.
0 to 199
200 to 399
400 to 999
1000s and 10,000s
1000s
10,000s
100,000s to 10,000,000,000,000s


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