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One hundred fifty-three is the natural number following one hundred fifty-two and preceding one hundred fifty-four. As a triangular number, it is the sum of the first 17 integers, and also the sum of the first five factorials. (It's also a hexagonal number). It is a Harshad number. Since 153 = 1^3 + 2^3 + 3^3, it is a 3-narcissistic number. And it is a Friedman number since 153 = 3 * 51.
Evagrius Ponticus considered 153 to represent a harmonization of contrasts, since 153 = 100 + 28 + 25, with 100 representing a square, 28 a triangle and 25 a circle.
| 153 | |
|---|---|
| Ordinal | 153 |
| Cardinal | 153rd |
| Factorization | <math>153 = 3^2 \cdot 17<math> |
| Roman numeral | CLIII |
| Binary | 10011001 |
| Hexadecimal | 99 |
One hundred fifty-three is also
See also: 150 (number)
For the year, see 153 AD.