The 153 (number) reference article from the English Wikipedia on 24-Apr-2004
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153 (number)

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).

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
Ordinal153
Cardinal153rd
Factorization
Roman numeralCLIII
Binary10011001
Hexadecimal99

One hundred fifty-three is also

See also: 150 (number)

For the year, see 153 AD.