204 (number)

Number|number = 204
range = 200s
cardinal = two hundred [and] four
ordinal = th
ordinal text = two hundred [and] fourth
numeral = 204
factorization = $2^2\; imes\; 3\; imes\; 17$
prime =
divisor = 1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204
roman = CCIIII
unicode =
greek prefix =
latin prefix =
bin = 11001100
oct =
duo =
hex = CC
misc =

204 is the natural number following 203 and preceding 205. It may be written as "two hundred four" or "two hundred and four".

In mathematics

204 is the sum of consecutive primes in two different ways: as the sum of a twin prime (101 + 103) and as the sum of six consecutive primes (23 + 29 + 31 + 37 + 41 + 43).

204 is a refactorable number because it has 12 divisors, and 204 is divisible by 12.

As a figurate number, 204 is a nonagonal number and a square pyramidal number (the sum of the first eight squares).

204 is a member of the Mian-Chowla sequence, being the smallest number after 182 such that the pairwise sums of the previous terms are all distinct.

204 is a Harshad number in base 10.

In other fields

* 204 is the HTTP status code indicating the request was received but there is no response to the request
* "Not in Room 204" is a children's picture book about childhood sexual abuse, written by Shannon Riggs and illustrated by Jaime Zollars. "Not in Room 204" received a starred review from the American Library Association's "Booklist" and won the 2007 Oregon Book Award for children's literature. It is published by Albert Whitman & Co (2007).