94 (number)

94 (ninety-four) is the natural number following 93 and preceding 95.

In mathematics

94 is:

• the twenty-ninth distinct semiprime and the fourteenth of the form (2.q).
• the ninth composite number in the 43-aliquot tree. The aliquot sum of 94 is 50 within the aliquot sequence; (94,50,43,1,0).
• the second number in the third triplet of three consecutive distinct semiprimes, 93, 94 and 95 ^[1]
• a 17-gonal number ^[2] and a nontotient. ^[3]
• an Erdős–Woods number, since it is possible to find sequences of 94 consecutive integers such that each inner member shares a factor with either the first or the last member. ^[4]
• a Smith number in decimal. ^[5]

In computing

The ASCII character set (and, more generally, ISO 646) contains exactly 94 graphic non-whitespace characters, which form a contiguous range of code points. These codes (0x21–0x7E, as corresponding high bit set bytes 0xA1–0xFE) also used in various multi-byte encoding schemes for languages of East Asia, such as ISO 2022, EUC and GB 2312. For this reason, code pages of 94² and even 94³ code points were common in East Asia in 1980s–1990s.

In astronomy

• Messier 94, a spiral galaxy in the constellation Canes Venatici
• The New General Catalogue object NGC 94, a galaxy in the constellation Andromeda

In other fields

Ninety-four is:

• The atomic number of plutonium, an actinide.
• The designation of STS-94 Space Shuttle Columbia launched July 1, 1997
• The code for international direct dial phone calls to Sri Lanka.
• Part of the model number of
  • AN-94, a Russian assault rifle.
  • M-94, a piece of cryptographic equipment used by the United States army in use from 1922 to 1943.
• The number of Haydn's Surprise Symphony (Symphony No. 94).
• Used as a nonsense number by the British satire magazine Private Eye . Most commonly used in spoof articles end halfway through a sentence with "(continued p. 94)". The magazine never extends to 94 pages: this was originally a reference to the enormous size of some Sunday newspapers.
• Each February, Respiratory Health Association of Metropolitan Chicago hosts Hustle Up the Hancock, a race up 94 floors of the John Hancock Center in Chicago to raise more than $1 million for lung disease research and programs."^{[ importance? ]}
• The 94th Fighter Squadron is a squadron of the United States Air Force, currently part of the 1st Operations Group of the 1st Fighter Wing, and stationed at Langley Air Force Base in Virginia
• The 94th Infantry Division was a unit of the United States Army in World War II, activated September 15, 1942.
• Saab 94 was the model number Saab unofficially used for the first generation Saab Sonett
• Form I-94 is the form used to declare to US Customs Officers by international travelers the items in their possession, purpose of visit, etc.
• The number of the French department Val-de-Marne

In sports

• The length of an NBA court is 94 feet (29 m) and width is 50 feet (15 m).
• Pascal Wehrlein, who drove for Sauber in Formula One in 2017, chose the number 94.

See also

• List of highways numbered 94

References

1. Sloane, N. J. A. (ed.). "SequenceA056809". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
2. "Sloane's A051869 : 17-gonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
3. "Sloane's A005277 : Nontotients". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
4. "Sloane's A059756 : Erdős-Woods numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
5. "Sloane's A006753 : Smith numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.