Forty three

The forty-three (43) is the natural number that follows 42 and precedes 44.

Math

• It is the 14th prime number, after 41, with which are twin prime numbers, and before the 47.
• 3.o prime number of Wagstaff.
• It forms a triplet of sexy prime numbers (31,37,43).
• Lucky number.
• It is a Gaussian prime number, because there are not two whole gaussians whose product is 43; it is also 4k + 3.
• In the Vigesimal Numbering System is 23_vTwo twenties with three units.
• As a square difference 222− − 212=43{displaystyle 22^{2}-21^{2}=43}
• 101011_b in binary notation; 1122₃, tertiary; 223₄ Quaternary. 133₅Five.
• 53₈octal notation; 47₉, base nine, nonary system; 37_D base 12, duodecimal system
• 4.o term of the succession of Sylvester.
• 43 is the largest natural number that is not a McNugget number.

See Frobenius problem.

Science

• 43 is the atomic number of technology. This is the synthetic element with the smallest atomic number.
• Object of Messier M43 is a region H II in the constellation of Orion.
• New Catalogue General NGC 43 is a lenticular galaxy located in the Andromeda constellation.
• (43) Ariadne is an asteroid belonging to the asteroid belt.

See more

• It's Austria's international phone code.
• In Mexico, "the 43" is one of the names known, colloquially, the case of the forced disappearance of that number of students in Ayotzinapa, Guerrero.