# 273 (number)

 ← 272 273 274 →
Cardinal two hundred seventy-three
Ordinal 273rd
(two hundred and seventy-third)
Factorization 3 × 7 × 13
Roman numeral CCLXXIII
Binary 1000100012
Ternary 1010103
Quaternary 101014
Quinary 20435
Senary 11336
Octal 4218
Duodecimal 1A912
Vigesimal DD20
Base 36 7L36

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

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

## In other fields

The zero of the Celsius temperature scale is (to the nearest whole number) 273 Kelvin. Thus, absolute zero (0 K) is approximately -273°C.[3] The freezing temperature of water and the thermodynamic temperature of the triple point of water are both approximately 0°C or 273 K.[4][5]

## References

1. James Shipman; Jerry Wilson; Charles Higgins (2012), An Introduction to Physical Science (13th ed.), Cengage Learning, p. 107, ISBN 9781133104094.
2. Larry Kirkpatrick; Gregory Francis (2006), Physics: A World View (6th ed.), Cengage Learning, p. 219, ISBN 9780495010883.
3. Alphonso Hendricks; Loganathan Subramony; Charmaine Van Blerk (1999), Physics for Engineering, Juta and Company Ltd, p. 229, ISBN 9780702144080.