# 183 (number)

183 (number)

183 is the natural number following 182 and preceding 184.

183 is a semiprime (also called biprime, 2-almost prime, or pq number).

183 is a central polygonal number, $n^2 - n + 1$, where $n=14$. [http://www.research.att.com/~njas/sequences/A002061 A002061]

183 is a perfect totient number.

183 is a number of points in projective plane over the Galois field GF(13).

183 is a repdigit in base 13 (111).

For the year 183 AD, see 183.

Wikimedia Foundation. 2010.

### Look at other dictionaries:

• Number theory — A Lehmer sieve an analog computer once used for finding primes and solving simple diophantine equations. Number theory is a branch of pure mathematics devoted primarily to the study of the integers. Number theorists study prime numbers (the… …   Wikipedia

• Number Seven, Queer Street — For the London street and expression, see Queer Street (London). Number Seven, Queer Street   …   Wikipedia

• ICE number — n. An emergency phone number programmed in a mobile phone s address book under the name ICE (in case of emergency). Example Citations: In 2003, nearly 900,000 emergency victims in the United States werent able to provide contact information to… …   New words

• 183-Day Rule — The 183 day rule is part of the substantial presence test used by the Internal Revenue Service to determine if a person, who is a dual taxpayer, will have to pay taxes in the United States. It is commonly used by aliens to establish residency in… …   Investment dictionary

• Wikipedia:List of Wikipedians by number of edits — Shortcuts: WP:NOE WP:WBE WP:EDITS WP:MOSTEDITS This is a list of Wikipedians ordered by number of edits in the English language Wikipedia. Edits in all namespaces are counted; deleted edits have been included in recent versions. Click… …   Wikipedia

• Bundesstraße 183 — Basisdaten Gesamtlänge: 121 km Bundesländer: Sachsen Anhalt Sach …   Deutsch Wikipedia

• Perfect number — In number theory, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself (also known as its aliquot sum). Equivalently, a perfect… …   Wikipedia

• Focke-Wulf Ta 183 — infobox Aircraft name = Ta 183 Huckebein type = Fighter manufacturer = Focke Wulf caption = Wind tunnel model designer = Kurt Tank first flight = introduced = retired = produced = number built = None completed status = Teminated by end of war… …   Wikipedia

• German submarine U-183 — U Boat Infobox type=IXC/40 fieldpost number= yard number= order date= keel=May 28, 1941 commission=April 1, 1942 yard=AG Weser, Bremen U Boat Patrol startdate=Start Date enddate=End Date assigned unit=Assigned Unit U Boat Patrol startdate=April 1 …   Wikipedia

• Treasury Regulation 1.183-2 — is a Treasury Regulation in the United States, outlining the taxes owed from income deriving from non business, non investment activity. Expenses relating to for profit activities, such as business and investment activities, are generally tax… …   Wikipedia