86 (number)
From Wikipedia, the free encyclopedia
86 (eighty-six) is the natural number following 85 and preceding 87.
Cardinal | 86 eighty-six |
Ordinal | 86th eighty-sixth |
Factorization | |
Divisors | 1, 2, 43, 86 |
Roman numeral | LXXXVI |
Binary | 01010110 |
Hexadecimal | 56 |
Contents |
[edit] In mathematics
Eighty-six is the twenty-fifth distinct biprime and the thirteenth of the form (2.q). The aliquot sum of 86 is 46 within the aliquot sequence (86,46,26,16,15,9,4,3,1,0) 86 being the seventeenth composite number in the 3-aliquot tree.
86 is the middle number in the second cluster of three discrete biprimes between 85 and 87 being themselves discrete biprimes.
86 is a semiprime, nontotient, a noncototient, a happy number, and a self number. It appears in the Padovan sequence, preceded by the terms 37, 49, 65 (it is the sum of the first two of these).
Since it is possible to find sequences of 86 consecutive integers such that each inner member member shares a factor with either the first or the last member, 86 is an Erdős–Woods number.
86 is a repdigit in base 6 (222).
[edit] In science
86 is the atomic number of radon. There are 86 metals on the modern periodic table.
[edit] In astronomy
- Messier object M86, a magnitude 11.0 lenticular galaxy in the constellation Virgo
- The New General Catalogue object NGC 86, a galaxy in the constellation Andromeda
- The Saros number of
- the solar eclipse series which began on 70 BC April 6 and ended on 1193 May 2. The duration of Saros series 86 was 1262.1 years, and it contained 71 solar eclipses.
- the lunar eclipse series which began on 75 BC July 13 and ended on 1224 August 30. The duration of Saros series 86 was 1298.1 years, and it contained 73 lunar eclipses.
[edit] In the English language
In English, the number 86 used as a verb, to "eighty-six," means to "ignore" or "get rid of". The first recorded usage of this term occurs in the mid-1930s. There are many theories of the origin of this usage, most pertain either to death or to prohibition.
One of the explanations pertaining to death is the distance of eighty miles out and six feet under meaning when a person who is to be killed by the mafia is forced to dig his own grave many miles away from civilization; or the possibility of a simple variation of the slang term deep six, which has identical meaning, and is simply meant to describe the approximate depth of water (6 fathoms, 11 meters) needed for a burial at sea. The term came into popular use among soldiers and veterans to describe missing soldiers as 86'd. Rather than describe buddies missing in action, it was slang to describe the MIA as being AWOL, therefore violating UCMJ Sub Chapter X Article 86. The public outdoor observatory of the Empire State Building was on the 86th floor; the site of more than 30 suicides. Another origin related to the Empire State Building is the fact that all the elevators stop at the 86th floor. Hence, everyone had to leave. The building opened in 1931, apparently a few years before the term became popular.
Of the explanations pertaining to prohibition, one is a reference to Article 86 of the New York state liquor code which defines the circumstances in which a bar patron should be refused service or "86ed". Others have suggested that this usage originated from the famous Delmonico's Restaurant in New York City, as item number 86 on their menu, their house steak, often ran out during the 19th century. However, there is no recorded usage of this term in the nineteenth century. Yet another explanation is that Chumley's, which was a famous 1900s New York speakeasy, is located at 86 Bedford St. During Prohibition, an entrance through an interior adjoining courtyard was used, as it provided privacy and discretion for customers. As was a New York tradition, the cops were on the payroll of the bar and would give a ring to the bar that they were coming for a raid. The bartender would then give the command "86 everybody!", which meant that everyone should hightail it out the 86 Bedford entrance because the cops were coming in through the courtyard door.
Another theory has it that this is rhyming slang for "nix." However, if so, it would be a wholly American origin, and thus would be unusual for rhyming slang.[1]
For many baseball fans, the most popular if misplaced reference was born of the 1986 playoff debacle for the Boston Red Sox. Game 6 and (eventually) the World Series slipped through the glove of first baseman Bill Buckner in the bottom of the 9th inning. The Sox didn't recover from the letdown in time for Game 7 and the New York Mets took the '86 crown. With Red Sox fans long considering the team to be cursed from trading Babe Ruth for cash and the 1986 World Series representing the closest shot the team had at winning the World Series in decades, the term '86 took on the meaning of "not happening." For football fans, "to 86" still means "to get rid off," for example, in the Cincinnati Bengals, Chad Johnson wears jersey #85, which, coupled with his desire to leave the team, has led to fans urging the Bengals to '86 85'.
[edit] In other fields
Eighty-six is also:
- The common name of the car Toyota Trueno GT-Apex (AE86), flagship car of Initial D
- the model number of F-86 Sabre and Ilyushin Il-86 aircraft
- the numerical representation of a "lock-out" protective relaying function used in electrical circuit protection schemes.
- the model number of CPM-86 operating system
- part of the model number of the X86 microprocessors
- The band Project 86 based its name on the usage of being 86'd.
- The novel Eighty-Sixed by David B. Feinberg details life as a gay man during the AIDS epidemic in 1980s New York City.
- In the TV series Get Smart, the principal character Maxwell Smart was also known as Agent 86.
- American rock band Green Day has a song called "86".
- The number of the French department Vienne
- The designation of two highways named Interstate 86, one in Idaho and the other in Pennsylvania and New York.
- +86 is the code for international direct dial phone calls to China
- One of five ISBN Group Identifiers for books published in Serbia
- The character Chick Hicks from the movie Cars is a stock car whose number is 86. The number refers both to movie creators Pixar's founding year, as well as his overtly aggressive and dangerous driving style (see use of 86 as a verb, above).
- The Boston Red Sox won the World Series for the first time in 86 years in 2004, and lost it with bad luck in 1986.
- New York City's Pier 86 is the site of the aircraft carrier USS Intrepid, now a Sea, Air, and Space Museum.
- Both the HBO television series The Sopranos, and the CBS series Secret Agent Man had a run of 86 episodes.
- An art gallery in Ventura, CA displaying art pieces from such artists Billy Childish, Anthony Ausgang, Stacy Lande and Derek Hess; most of which include the number 86 hidden or overtly shown in the art; some of which fall under the genre of lowbrow.