93 (number)
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|---|---|---|---|---|
| Cardinal | ninety-three | |||
| Ordinal | 93rd (ninety-third) |
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| Factorization | 3 · 31 | |||
| Divisors | 1, 3, 31, 93 | |||
| Roman numeral | XCIII | |||
| Binary | 10111012 | |||
| Ternary | 101103 | |||
| Quaternary | 11314 | |||
| Quinary | 3335 | |||
| Octal | 1358 | |||
| Duodecimal | 7912 | |||
| Hexadecimal | 5D16 | |||
| Vigesimal | 4D20 | |||
| Base 36 | 2L36 | |||
93 (ninety-three) is the natural number following 92 and preceding 94.
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In mathematics[edit]
93 is the twenty-eighth distinct semiprime[1] and the ninth of the form (3.q).[2] It is the first number in the third triplet of consecutive semiprimes, 93, 94, and 95.[3] Since its two prime factors, 3 and 31 are both Gaussian primes, this means that 93 is a Blum integer.[4]
93 is a repdigit in base 5 (333).[5] It is a lucky number[6] a cake number,[7] and an idoneal number.[8]
There are 93 different cyclic Gilbreath permutations on 11 elements,[9] and therefore there are 93 different real periodic points of order 11 on the Mandelbrot set.[10]
In other fields[edit]
Ninety-three is:
- The atomic number of neptunium, an actinide.
- The code for international direct dial phone calls to Afghanistan.
- One of two ISBN Group Identifiers for books published in India.
- The number of the French department Seine-Saint-Denis, and as such used by many French gangsta rappers and those emulating their speech.[11][12]
In classical Persian finger counting, the number 93 is represented by a closed fist. Because of this, classical Arab and Persian poets around 1 CE referred to someone's lack of generosity by saying that the person's hand made "ninety-three". [13]
See also[edit]
- 93, a year in the Julian calendar
- List of highways numbered 93
- Ninety-Three (Quatrevingt-treize), a novel concerning the French Revolution by Victor Hugo
- 93 (Thelema), a greeting among Thelemites based on the numerological value of Thelema (Will) and Agape (Love) in Greek letters.
- Babia 93, an album from a Pakistani pop singer Sajjad Ali
- London's 93 Feet East music venue
- Los Angeles 93 KHJ radio
- United Airlines Flight 93, one of the airplanes hijacked on September 11, 2001.
References[edit]
- ^ "Sloane's A001358 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A001748 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A056809 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A016105 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A048330 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A000959 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A000125 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A000926 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A000048 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Diaconis, Persi; Graham, Ron (2012), "Chapter 5: From the Gilbreath Principle to the Mandelbrot Set", Magical Mathematics: the mathematical ideas that animate great magic tricks, Princeton University Press, pp. 61–83.
- ^ Durand, Alain-Philippe (2002), Black, Blanc, Beur: Rap Music and Hip-Hop Culture in the Francophone World, Scarecrow Press, p. 55, ISBN 9780810844315.
- ^ Meltzer, Marisa; Shepherd, Julianne (March 2006), "Spitting Fire", Spin: 76–81.
- ^ Bloom, Jonathan M. (Spring 2002), "Hand sums: The ancient art of counting on your fingers", Boston College Magazine.
External links[edit]
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Wikimedia Commons has media related to: 93 (number) |
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