|
|
|
|
|
43 (Number)43 is the natural number following 42 and preceding 44. In mathematics Forty-three is the 14th smallest prime number. The previous is forty-one, with which it comprises a twin prime, the next is forty-seven. 43 is a centered heptagonal number. Let a(0) = a(1) = 1, and thenceforth a(n) = (a(0)2 + a(1)2 + ... + a(n-1)2) / (n-1). This sequence continues 1 1 2 3 5 10 28 154... . Amazingly, a(43) is the first term of this sequence that is not an integer. Negative forty-three (-43) is a Heegner number. In science In astronomy, - Messier object M43, a magnitude 7.0 H II region in the constellation of Orion, a part of the Orion Nebula, and also sometimes known as de Mairan's Nebula
- The New General Catalogue object NGC 43, a barred spiral galaxy in the constellation Andromeda
- The Saros number of the solar eclipse series which began on -1512 April 29 and ended on -232 June 5. The duration of Saros series 43 was 1280.1 years, and it contained 72 solar eclipses.
- The Saros number of the lunar eclipse series which began on -1481 August 27 and ended on 70 March 15. The duration of Saros series 43 was 1550.5 years, and it contained 87 lunar eclipses.
In other fields Forty-three is also: - The designation of Interstate 43, a freeway in Wisconsin.
- The code for direct dial international phone calls to Austria.
- Part of the title of the historical British comedy show Hancock's Forty-Three Minutes, starring Tony Hancock.
- Part of the title of a historical short story by Hershel Finman titled Forty-Three Rubles, about Rabbi Zvi Elimelech Spira.
- The year AD 43, 43 BC, and 1943.
|
 |
|
| Copyright 2005-2009 OnPedia.com. All Rights Reserved |
|
|