273 (number)

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

← 272 273 274 →
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 a sphenic number (A007304), a lucky number (A000959), a truncated triangular pyramid number (A051937), and an idoneal number (A000926). There are 273 different ternary trees with five nodes (A001764). It is in the Moser–de Bruijn sequence (A000695), comprising the sum 44+42+40, and is a central polygonal number (A002061).

References