104 (number)

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104 is the natural number following 103 and preceding 105. When written "one hundred four," it is the smallest integer requiring fourteen letters in English.

← 103 105 → 104
← 100 101 102 103 104 105 106 107 108 109 → List of numbers — Integers ← 100 110 120 130 140 150 160 170 180 190 →
Cardinal	one hundred [and] four
Ordinal	104th (one hundred [and] fourth)
Numeral system	104
Factorization	$2^3 \cdot 13$
Divisors	1, 2, 4, 8, 13, 26, 52, 104
Roman numeral	CIV
Binary	1101000
Hexadecimal	68

1 In mathematics
2 In science
3 In other fields
4 In the space program
5 In sports
6 See also
7 References

[edit] In mathematics

One hundred [and] four is a primitive semiperfect number and a composite number, with its divisors being 1, 2, 4, 8, 13, 26, 52 and 104. As it has 8 divisors total, and 8 is one of those divisors, 104 is a refactorable number. The distinct prime factors of 104 add up to 15, and so do the ones of 105, hence the two numbers form a Ruth-Aaron pair under the first definition.

In regular geometry, 104 is the smallest number of unit line segments that can exist in a plane with four of them touching at every vertex.

[edit] In science

The atomic number of rutherfordium.
Number of degrees Fahrenheit corresponding to 40 Celsius.

In astronomy,

Messier object M104, a magnitude 9.5 spiral galaxy in the constellation Virgo, also known as the Sombrero Galaxy

The New General Catalogue object NGC104, a magnitude 4 globular cluster in the constellation Tucana

Asteroid 104 Klymene

The Saros number of the solar eclipse series which began on 470 April 17 and ended on 1714 May 13. The duration of Saros series 104 was 1244.0 years, and it contained 70 solar eclipses.

The Saros number of the lunar eclipse series which began on 465 July 24 and ended on 1781 October 20. The duration of Saros series 104 was 1316.2 years, and it contained 74 lunar eclipses.

[edit] In other fields

104 is also:

The year AD 104 or 104 BC.
The number of Corinthian columns in the Temple of Olympian Zeus, the largest temple ever built in Greece.
The number of guns on Admiral Horatio Nelson's flagship HMS Victory.
The number of Symphonies written by Joseph Haydn on which numbers are agreed upon (though in fact, he wrote more: see list of symphonies by Joseph Haydn).
The specification of the Soviet Union's first twin-engine jet airliner the Tupolev Tu-104, first produced in 1955
F-104 Starfighter was a jet fighter aircraft, built by Lockheed Aircraft Corporation that serves the United States Air Force from 1958 until 1967
The name of a car, the Peugeot 104
Radio stations such as WAXQ, Q-104.3, New York, and WFSH-FM 104.7 the Fish", Atlanta
The 104th United States Congress met in from January 3, 1995 to January 3, 1997 during the Bill Clinton administration
New York City subway stations: 104th Street on the BMT line, and 104th Street on the IND line
Canada's Route 104 is an east/west highway on the south shore of the St. Lawrence River
The 104th Infantry Division —nicknamed the Timberwolf Division—was a division of the United States Army that fought for 195 consecutive days during World War II

[edit] In the space program

A-104 was the ninth test flight of the Saturn I. This mission was the second flight in the Saturn I operational series and the fourth vehicle to carry an Apollo boilerplate spacecraft. It launched May 25, 1965
STS-104 was a Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle Atlantis (OV-104) on July 12, 2001