World Library  
Flag as Inappropriate
Email this Article

250 (number)

Article Id: WHEBN0001809587
Reproduction Date:

Title: 250 (number)  
Author: World Heritage Encyclopedia
Language: English
Subject: 201 (number), 202 (number), 203 (number), 204 (number), 205 (number)
Collection: Integers
Publisher: World Heritage Encyclopedia

250 (number)

249 250 251
Cardinal two hundred fifty
Ordinal 250th
(two hundred and fiftieth)
Factorization 2 × 53
Roman numeral CCL
Binary 111110102
Ternary 1000213
Quaternary 33224
Quinary 20005
Senary 10546
Octal 3728
Duodecimal 18A12
Hexadecimal FA16
Vigesimal CA20
Base 36 6Y36

250 (two hundred [and] fifty) is the natural number following 249 and preceding 251.

As a Mandarin slang term, 250 (二百五 pinyin èrbǎiwǔ) is an insult meaning "stupid person" or "simpleton". The expression is based on bàndiàozi (半弔子 or 半吊子). In ancient China, copper coins were grouped by stringing them together through the square holes in the center; originally 1000 was a unit of currency called a diao. Ban diao zi literally means half a diao (500 coins). Since modest Chinese scholars may call themselves ban diao zi to humbly deprecate their own expertise, ban diao zi is not necessarily a pejorative term. On the other hand, Er bai wu (250) is half of a ban diao zi and it is an insult.

Two hundred [and] fifty is also:

  • SMTP status code for mail action completed.
  • In the Holy Bible, the number of men rebelling against Moses, who were swallowed up by a fire. (Numbers 26:10).
  • The number of Pokémon originally available in Pokémon Gold and Silver before Celebi was added.


251 is prime, Sophie Germain prime, sum of three consecutive primes (79 + 83 + 89), sum of seven consecutive primes (23 + 29 + 31 + 37 + 41 + 43 + 47), Chen prime, Eisenstein prime with no imaginary part.

252 = 22·32·7, refactorable number, Harshad number, central binomial coefficient (10, 5), the largest one divisible by all coefficients in the previous line, member of the Mian–Chowla sequence

253 = 11·23, triangular number, star number, centered heptagonal number, centered nonagonal number, Blum integer

254 = 2·127, Mertens function returns 0, nontotient

255 has its own article.

256 has its own article.

257 is prime, Fermat prime, balanced prime, Chen prime, Eisenstein prime with no imaginary part

258 = 2·3·43, sphenic number, sum of four consecutive primes (59 + 61 + 67 + 71), nontotient

259 = 7·37, repdigit in base 6 (1111).

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.