93 (number)
93 (ninety-three) is the natural number following 92 and preceding 94.
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| Cardinal | ninety-three | |||
| Ordinal | 93rd (ninety-third) | |||
| Factorization | 3 × 31 | |||
| Divisors | 1, 3, 31, 93 | |||
| Greek numeral | ϞΓ´ | |||
| Roman numeral | XCIII | |||
| Binary | 10111012 | |||
| Ternary | 101103 | |||
| Octal | 1358 | |||
| Duodecimal | 7912 | |||
| Hexadecimal | 5D16 | |||
In mathematics
93 is:
- the twenty-eighth distinct semiprime[1] and the ninth of the form (3.q).[2]
- the first number in the third triplet of consecutive semiprimes, 93, 94, and 95.[3]
- a Blum integer, since its two prime factors, 3 and 31 are both Gaussian primes.[4]
- a repdigit in base 5 (3335),[5] and 30 (3330).
- palindromic in bases 2, 5, and 30.
- a lucky number.[6]
- a cake number.[7]
- 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
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]
gollark: Imagine not running an emulator for a Minecraft computer mod directly on your computer's boot thingy.
gollark: None of that "operating system" getting in the way.
gollark: This is why on performance-sensitive computers, I run PotatOS on CraftOS-EFI for maximum performance.
gollark: I think the reason my music listening is using so much CPU, for instance, is that I'm using YouTube for it, which provides videos, which Firefox is decoding even if the actual video content isn't seen. The actual audio content I care about could probably be decoded on a cheap ARM microcontroller or something if there wasn't so much random stuff in the way.
gollark: Petition to rewrite Linux in Haskell.
See also
- AD 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.
- 93 'til Infinity, the debut album by Oakland hip hop group Souls of Mischief.
References
- Sloane, N. J. A. (ed.). "Sequence A001358". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- Sloane, N. J. A. (ed.). "Sequence A001748". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- Sloane, N. J. A. (ed.). "Sequence A056809". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- Sloane, N. J. A. (ed.). "Sequence A016105". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- Sloane, N. J. A. (ed.). "Sequence A048330". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- Sloane, N. J. A. (ed.). "Sequence A000959". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- Sloane, N. J. A. (ed.). "Sequence A000125". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- Sloane, N. J. A. (ed.). "Sequence A000926". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- Sloane, N. J. A. (ed.). "Sequence 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.
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