293 (number) explained
293 is the natural number following 292 and preceding 294.
In mathematics
293 is:
- a prime number,[1]
- a Pythagorean prime,
- a Sophie Germain prime
- a Chen prime
- strictly trivially polygonal (number n that is polygonal in only 2 ways: 2-gonal and n-gonal)[2]
- 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.[3]
- 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.[4]
In technology
- 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.[5]
- 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.[6]
- 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.[7]
- 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.[9]
- On April 23, 2019, Jules and You in the Netherlands organized an event where 293 participants were fire breathing simultaneously.[10]
- 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.[11]
- 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.[12]
Other fields
Notes and References
- Web site: Prime number information. mathworld.wolfram.com.
- 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.
- Web site: Tetradic numbers and tetradic primes. mathworld.wolfram.com.
- Web site: Number of ways to make change for a dollar. maa.org.
- Web site: Sweden area code +46 293. en.codigosinternacionales.com. 14 November 2021 .
- Web site: 293t cell line information. tecfinder.stanford.edu.
- Web site: Bagger 293. www.guinnessworldrecords.com.
World Records
- 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.[7]
- Web site: Highest rate of tv viewing. www.guinnessworldrecords.com.
- Web site: 293 people fire breathing. www.guinnessworldrecords.com.
- Web site: 293 people dressed as sumo wrestlers. www.guinnessworldrecords.com.
- Web site: 293 people at port tasting event. www.guinnessworldrecords.com.
- Web site: French Republican Calendar Guide. broadcast.lds.org.
- Web site: About the 293rd infantry division (in Russian). pamyat-naroda.ru.