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293 (number)

From Wikipedia, the free encyclopedia
← 292 293 294 →
Cardinaltwo hundred ninety-three
Ordinal293rd
(two hundred ninety-third)
Factorizationprime
Divisors1, 293
Greek numeralΣϞΓ´
Roman numeralCCXCIII
Binary1001001012
Ternary1012123
Senary12056
Octal4458
Duodecimal20512
Hexadecimal12516

293 is the natural number following 292 and preceding 294.

In mathematics

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293 is:

  • a prime number,[1][2]
  • a Pythagorean prime,[3]
  • a Sophie Germain prime[4]
  • a Chen prime[5]
  • strictly trivially polygonal (number n that is polygonal in only 2 ways: 2-gonal and n-gonal)[6]
  • equivalent to the sum of the first three tetradic primes. Tetradic numbers are numbers that are the same if written backwards, flipped upside-down, or mirrored upside-down and tetradic primes are tetradic numbers that are also prime. It is the sum of 11 + 101 + 181.[7]
  • the sum of perfect cubes 2³+2³+3³+5³+5³
  • The total number of ways to make change for a dollar in US minted coins including the half-dollar and the dollar coin.[8]

In technology

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  • There is no area code in the United States with 293. There is an area code for +46 293 in Tierp, Sweden. The +46 part locates the code in Sweden and the 293 part locates it as Tierp.[9]
  • 293T is a cell line in humans that can assist in gene expression or DNA replication. It has been tested on its ability to use certain viruses such as adenoviruses and other mammalian viruses.[10]
  • The Omni-293 is a type of omni-directional antenna that includes 3.5 GHz of 5G bands. It is designed to be used in both rural and urban locations.<ref"Omni-293 antenna information". poynting.tech.</ref>

World Records

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  • In 1995, the Bagger 293 was developed by Takraf and was the heaviest machine that could move by itself. It weighs in at 31.3 million lbs.[11]
  • On December 31, 2012, it was reported that in 2011, the United States was told to have the highest average watch time of TV per day at a 293 minutes.[12]
  • On April 23, 2019, Jules and You in the Netherlands organized an event where 293 participants were fire breathing simultaneously.[13]
  • On August 23, 2015, the Purple House Cancer Support in Ireland received the Guinness World Record for the greatest number of people dressed as sumo wrestlers at 293 people.[14]
  • On May 15, 2018, Alberto Pires in Portugal, at the Lisbon Bar Show, hosted the largest port tasting event with a total of 293 people.[15]

Other fields

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References

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  1. ^ "Prime number information". mathworld.wolfram.com.
  2. ^ Sloane, N. J. A. (ed.). "Sequence A000040 (The prime numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^ Sloane, N. J. A. (ed.). "Sequence A002144 (Pythagorean primes: primes of form 4*k + 1)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  4. ^ Sloane, N. J. A. (ed.). "Sequence A005384 (Sophie Germain primes p: 2p+1 is also prime)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  5. ^ Sloane, N. J. A. (ed.). "Sequence A109611 (Chen primes: primes p such that p + 2 is either a prime or a semiprime)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  6. ^ Sloane, N. J. A. (ed.). "Sequence A090467 (Numbers which are not regular figurative or polygonal numbers of order greater than 2. That is, numbers not of the form 1 + k*n(n-1)/2 - (n-1)^2 where n >= 2 and k >= 2)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  7. ^ "Tetradic numbers and tetradic primes". mathworld.wolfram.com.
  8. ^ "Number of ways to make change for a dollar". maa.org.
  9. ^ "Sweden area code +46 293". en.codigosinternacionales.com. 14 November 2021.
  10. ^ "293t cell line information". tecfinder.stanford.edu.
  11. ^ "Bagger 293". www.guinnessworldrecords.com.
  12. ^ "Highest rate of tv viewing". www.guinnessworldrecords.com.
  13. ^ "293 people fire breathing". www.guinnessworldrecords.com.
  14. ^ "293 people dressed as sumo wrestlers". www.guinnessworldrecords.com.
  15. ^ "293 people at port tasting event". www.guinnessworldrecords.com.
  16. ^ "French Republican Calendar Guide" (PDF). broadcast.lds.org.
  17. ^ "About the 293rd infantry division (in Russian)". pamyat-naroda.ru.