86 (number)
Encyclopedia : 8 : 86 : 86N : 86 (number)
86 (eighty-six) is the natural number following 85 and preceding 87.
| Cardinal | 86 eighty-six |
| Ordinal | 86th eighty-sixth |
| Factorization | [ 2 \cdot 43 ] |
| Roman numeral | LXXXVI |
| Binary | 01010110 |
| Hexadecimal | 56 |
In mathematics
86 is a 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).86 is a repdigit in base 6 (222).
China International Country code (Telephone) - 86
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.
In other fields
Eighty-six is also:
- the atomic number of radon
- the model number of F-86 Sabre and Ilyushin Il-86 aircraft
- the model number of CPM-86 operating system
- part of the model number of the X86 microprocessors
- used as a verb, to "eighty-six" means to "ignore" or "get rid of". Suggested theories of the source of this usage include:
- *Possibly 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". Another theory has it that this is rhyming slang for "nix." Interestingly, this seems to be an American coinage, unusual for rhyming slang.[link]
- *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.
- *Another explanation is that Chumley's, a famous 1900's New York speakeasy, was 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.
- 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.
- the code for international direct dial phone calls to China
- One of five ISBN Group Identifiers for books published in Serbia and Montenegro
- Used to refer to the popular Toyota AE86 Sprinter Trueno
- The year AD 86, 86 BC, or 1986.
- The name of the Boston rock band 'Eighty-six'
- On the Fox website for Hell's Kitchen (US TV series), each contestant's picture has "86'd" overlaid on it when the contestant is eliminated.
- China International Country code (Telephone) - 86
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