204 (number): Difference between revisions
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==In mathematics== |
==In mathematics== |
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* 204 is the sum of a twin prime (101 + 103). |
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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). |
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204 is a [[refactorable number]] because it has 12 divisors, and 204 is divisible by 12. |
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As a figurate number, 204 is a [[nonagonal number]] and a [[square pyramidal number]] (the sum of the first eight squares). |
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* 204 is a member of the [[Mian-Chowla sequence]] |
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* 204 is a [[Harshad number]] |
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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. |
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==In other fields== |
==In other fields== |
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Revision as of 21:59, 1 July 2008
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).