Two hundred seventy-three (273, CCLXXIII) is a natural number that comes after 272 and before 274.

List of numbers — Integers << 0 100 200 300 400 500 600 700 800 900 >>
Cardinal	Two hundred [and] seventy-three
Ordinal	273rd
Factorization	<math>255 = 3 \cdot 7 \cdot 13<math>
Roman numeral	CCLXXIII
Binary	100010001
Hexadecimal	111

It is a sphenic number, and a repdigit in base 9 (333), base 16 (111), base 20 (DD or 13 13), base 38 (77), and base 90 (33).

273 is also:

• The zero of the Celsius temperature scale is (to the nearest whole number) 273 kelvins
• American composer John Cage's piano composition 4'33" consists of 273 seconds (four minutes and 33 seconds) of silence, in three movements.

---

This article is about the number 273. For the year AD 273, see 273.