432nd Missile Brigade
43 may refer to: * 43 (number) * one of the years 43 BC, AD 43, 1943, 2043 * Licor 43, also known as "Cuarenta Y Tres" ("Forty-three" in Spanish) * George W. Bush, 43rd President of the United States, nicknamed "Bush 43" to distinguish from his father * "Forty Three", a song by Karma to Burn from the album ''Appalachian Incantation Appalachian may refer to: * Appalachian Mountains, a major mountain range in eastern United States and Canada * Appalachian Trail, a hiking trail in the eastern United States * The people of Appalachia and their culture ** Appalachian Americans, e ...

43 (number)
43 (forty-three) 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, and the next is forty-seven. 43 is the smallest prime that is not a Chen prime. It is also the third Wagstaff prime. 43 is the fourth term of Sylvester's sequence, one more than the product of the previous terms (2 × 3 × 7). 43 is a centered heptagonal number. Let ''a'' = ''a'' = 1, and thenceforth ''a'' = (''a'' + ''a'' + ... + ''a''). This sequence continues 1, 1, 2, 3, 5, 10, 28, 154... . ''a'' is the first term of this sequence that is not an integer. 43 is a Heegner number. 43 is the largest prime which divides the order of the Janko group J4. 43 is a repdigit in base 6 (111). 43 is the number of triangles inside the Sri Yantra. 43 is the largest natural number that is not an (original) McNugget number. 43 is the smallest prime number expressible as the sum of 2, ...
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