43 (number)
From Halbeeg, the open encyclopedia · Af-Soomaali
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43 is a natural number that comes between 42 and 44. It belongs to the group of numbers used in counting, measurement, and notation. In mathematics, it has properties that can be described through its factors.
43 is a prime number—it can only be divided evenly by 1 and itself. It is the fourteenth prime number, starting from 2. Therefore it cannot be expressed as the product of two smaller whole numbers.
Mathematical properties
The sum of its digits is 7 (4 + 3). In binary notation, 43 is written as 101011. In hexadecimal, it is 2B. Its only factors are 1 and 43, which confirms it is prime.
43 is an odd number. It is a prime that follows 41 in the sequence of primes between 41 and 47. 43 and 41 are twin primes, since the difference between them is 2.
General use
Like other numbers, 43 is used in marking years, dates, counting age, and identification numbers. In various numeral systems based on counting, 43 has no special universal meaning; its significance depends on the context in which it is used.
Nomenclature
In Somali it is spoken as "soddon iyo saddex" (literally "forty and three"). In the Hindu-Arabic numeral system used globally, it is written 43. In Roman numerals, it is XLIII.