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246 (number)
246 (two hundred ndforty-six) is the natural number following 245 and preceding 247. In mathematics 246 is: *an untouchable number. *palindromic in bases 5 (14415), 9 (3039), 40 (6640), 81 (3381), 122 (22122) and 245 (11245). *a Harshad number in bases 2, 3, 6, 7, 9, 11 (and 15 other bases). *the smallest number N for which it is known that there is an infinite number of prime gaps no larger than N. Also: *The aliquot sequence starting at 246 is: 246, 258, 270, 450, 759, 393, 135, 105, 87, 33, 15, 9, 4, 3, 1, 0. *There are exactly 246 different rooted plane trees with eight nodes, and 246 different necklaces with seven black and seven white beads. In other fields * +246 is the code for international direct dial phone calls to British Indian Ocean Territory (Diego Garcia). * +1246, is the area code assigned to Barbados. * List of highways numbered 246. * 2-4-6, a Whyte notation classification of steam locomotive A steam locomotive is a locomotive that provides the force ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called ''Cardinal number, cardinal numbers'', and numbers used for ordering are called ''Ordinal number, ordinal numbers''. Natural numbers are sometimes used as labels, known as ''nominal numbers'', having none of the properties of numbers in a mathematical sense (e.g. sports Number (sports), jersey numbers). Some definitions, including the standard ISO/IEC 80000, ISO 80000-2, begin the natural numbers with , corresponding to the non-negative integers , whereas others start with , corresponding to the positive integers Texts that exclude zero from the natural numbers sometimes refer to the natural numbers together with zero as the whole numbers, while in other writings, that term is used instead for the integers (including negative integers). The natural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Code For International Direct Dial
Country calling codes or country dial-in codes are telephone number prefixes for reaching telephone subscribers in the networks of the member countries or regions of the International Telecommunication Union (ITU). The codes are defined by the ITU-T in standards E.123 and E.164. The prefixes enable international direct dialing (IDD) and are also referred to as ''international subscriber dialing'' (ISD) codes. Country codes are a component of the international telephone numbering plan and are necessary only when dialing a telephone number to establish a call to another country. Country codes are dialed before the national telephone number. By convention, international telephone numbers are represented by prefixing the country code with a plus sign (+), which also indicates to the subscriber that the local international call prefix must first be dialed. For example, the international call prefix in all countries of the North American Numbering Plan is 011, while it is 00 in most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whyte Notation
Whyte notation is a classification method for steam locomotives, and some internal combustion locomotives and electric locomotives, by wheel arrangement. It was devised by Frederick Methvan Whyte, and came into use in the early twentieth century following a December 1900 editorial in ''American Engineer and Railroad Journal''. The notation was adopted and remains in use in North America and the United Kingdom to describe the wheel arrangements of steam locomotives (in the latter case also for diesel and electric locomotives), but for modern locomotives, multiple units and trams it has been supplanted by the UIC system in Europe and by the AAR system (essentially a simplification of the UIC system) in North America. Structure of the system Basic form The notation in its basic form counts the number of leading wheels, then the number of driving wheels, and finally the number of trailing wheels, numbers being separated by dashes. For example, a locomotive with two leadi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2-4-6
In Whyte notation, a 2-4-6 is a steam locomotive with two unpowered leading wheels followed by four powered driving wheels and six unpowered trailing wheels. Equivalent classifications Other equivalent classifications are: *UIC classification: 1B3 (also known as German classification and Italian classification) *French classification: 123 *Turkish classification: 26 *Swiss classification: 2/6 The equivalent UIC classification is 1'B3' (or (1'B)'3' for a Mason Bogie). Examples This unusual wheel arrangement does not appear to have been used on the mainline railways in the UK. It was, however, one of the configurations used on the Mason Bogie articulated locomotives, in the US during the 1880s. Two examples were constructed at the Mason Machine Works for the narrow gauge Boston, Revere Beach and Lynn Railroad The Boston, Revere Beach and Lynn Railroad was a narrow-gauge passenger-carrying shortline railroad between East Boston and Lynn, Massachusetts, from 1875 to 1940. Part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Highways Numbered 246
The following highways are numbered 246: Canada * Nova Scotia Route 246 * Prince Edward Island Route 246 Costa Rica * National Route 246 Japan * Japan National Route 246 United States * Arkansas Highway 246 * California State Route 246 * Georgia State Route 246 * Indiana State Road 246 * K-246 (Kansas highway) * Kentucky Route 246 * Maryland Route 246 * Minnesota State Highway 246 * Missouri Route 246 * Montana Secondary Highway 246 * New Mexico State Road 246 * New York State Route 246 * Ohio State Route 246 * Pennsylvania Route 246 * Rhode Island Route 246 * South Carolina Highway 246 * Tennessee State Route 246 * Texas State Highway 246 (former) ** Texas State Highway Spur 246 ** Farm to Market Road 246 (Texas) * Utah State Route 246 (former) * Virginia State Route 246 The following is a list of primary state highways in Virginia shorter than one mile (1.6 km) in length. For a list of such highways serving Virginia state institutions, see State highways ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbados
Barbados is an island country in the Lesser Antilles of the West Indies, in the Caribbean region of the Americas, and the most easterly of the Caribbean Islands. It occupies an area of and has a population of about 287,000 (2019 estimate). Its capital and largest city is Bridgetown. Inhabited by Island Caribs, Kalinago people since the 13th century, and prior to that by other Indigenous peoples of the Americas, Amerindians, Spanish navigators took possession of Barbados in the late 15th century, claiming it for the Crown of Castile. It first appeared on a Spanish map in 1511. The Portuguese Empire claimed the island between 1532 and 1536, but abandoned it in 1620 with their only remnants being an introduction of wild boars for a good supply of meat whenever the island was visited. An Kingdom of England, English ship, the ''Olive Blossom'', arrived in Barbados on 14 May 1625; its men took possession of the island in the name of James VI and I, King James I. In 1627, the first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 246
Area code 246 is the telephone area code in the North American Numbering Plan (NANP) for Barbados. Telecommunication services in Barbados are regulated by the Government of Barbados's telecommunications unit. The number ''246'' spells ''BIM'' on an alpha-numeric telephone keypad, a nickname for the island. Due to a long established affiliation with the NANP, telephone numbers in Barbados are often styled as ''(246) NXX-xxxx''. International standards, such as E.123, advocate the inclusion of the prefix ''+1'' to indicate ''246'' is a part of the NANP. History Area code 246 was created in a split of area code 809, which was the original area code for most of the Caribbean. Permissive dialing was possible from 1 July 1996 to 15 January 1997 at which time all calls placed to Barbados required the use of the prefix ''1 246'' prefix. Dialing procedures To Barbados *; From within North America (NANP) When calling Barbados from elsewhere in the North American Numbering Plan (e.g. from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diego Garcia
Diego Garcia is an island of the British Indian Ocean Territory, a disputed overseas territory of the United Kingdom. It is a militarised atoll just south of the equator in the central Indian Ocean, and the largest of the 60 small islands of the Chagos Archipelago. The Portuguese were the first Europeans to find it and it was then settled by the French in the 1790s and transferred to British rule after the Napoleonic Wars. It was one of the "Dependencies" of the British Colony of Mauritius until the Chagos Islands were detached for inclusion in the newly created British Indian Ocean Territory (BIOT) in 1965. In 1966, the population of the island was 924. These people were employed as contract farm workers primarily on copra plantations owned by the Chagos-Agalega company. Although it was common for local plantation managers to allow pensioners and the disabled to remain in the islands and continue to receive housing and rations in exchange for light work, children after the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Indian Ocean Territory
The British Indian Ocean Territory (BIOT) is an Overseas Territory of the United Kingdom situated in the Indian Ocean, halfway between Tanzania and Indonesia. The territory comprises the seven atolls of the Chagos Archipelago with over 1,000 individual islandsmany very smallamounting to a total land area of . The largest and most southerly island is Diego Garcia, , the site of a Joint Military Facility of the United Kingdom and the United States. The only inhabitants are British and United States military personnel, and associated contractors, who collectively number around 3,000 (2018 figures). The forced removal of Chagossians from the Chagos Archipelago occurred between 1968 and 1973. The Chagossians, then numbering about 2,000 people, were expelled by the UK government to Mauritius and Seychelles in order to construct the military base. Today, the exiled Chagossians are still trying to return, saying that the forced expulsion and dispossession was unlawful, but the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
+246
Country Code: +246 International Call Prefix: 00 National Significant Numbers(NSN):seven digits. The group of islands forming the British Indian Ocean Territory has no area codes. This region includes the Chagos Archipelago, the main island of which is Diego Garcia. Allocations See also *Telephone numbers in the United Kingdom References Communications in the British Indian Ocean Territory British Indian Ocean Territory The British Indian Ocean Territory (BIOT) is an Overseas Territory of the United Kingdom situated in the Indian Ocean, halfway between Tanzania and Indonesia. The territory comprises the seven atolls of the Chagos Archipelago with over 1,000 ... British Indian Ocean Territory {{Telephonenumber-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
245 (number)
245 (two hundred ndforty-five) is the natural number following 244 and preceding 246. In mathematics 245 is: *a composite number. *a stella octangula number. *palindromic in bases 34 (7734) and 48 (5548) *a Harshad number in bases 7, 9, 11, 15, 31, 35, 36 (and 14 other bases). *the aliquot sum of any of these numbers: 723, 1195, 2563, 3859, *part of the 97-aliquot tree. 4624, 4893, 2595, 1581, 723, 245, In online public access (library) catalogs In the MARC format for records in online public access (library) catalogs, in which each type of information about a book (or other library material) is identified with a 3-digit number, 245 identifies the title of the item; most library catalog software requires that each record have at least a 245 tag, even if no other information is entered about the item. In other fields * The number of Jewish singers who returned from captivity in Babylon in c. 538 BCE following the rise of Cyrus the Great and the Persian Empire. ''...besides the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necklace (combinatorics)
In combinatorics, a ''k''-ary necklace of length ''n'' is an equivalence class of ''n''-character strings over an alphabet of size ''k'', taking all rotations as equivalent. It represents a structure with ''n'' circularly connected beads which have ''k'' available colors. A ''k''-ary bracelet, also referred to as a turnover (or free) necklace, is a necklace such that strings may also be equivalent under reflection. That is, given two strings, if each is the reverse of the other, they belong to the same equivalence class. For this reason, a necklace might also be called a fixed necklace to distinguish it from a turnover necklace. Formally, one may represent a necklace as an orbit of the cyclic group acting on ''n''-character strings over an alphabet of size ''k'', and a bracelet as an orbit of the dihedral group. One can count these orbits, and thus necklaces and bracelets, using Pólya's enumeration theorem. Equivalence classes Number of necklaces There are :N_k(n)=\f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
