Chen prime

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English

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Etymology

Named after Chinese mathematician Chen Jingrun, who proved in 1966 that there are infinitely many such numbers.

Noun

Chen prime (plural Chen primes)

  1. (number theory) Any prime number p such that p+2 is either a semiprime or another prime.
    • 2013, Laura Hemphill, Buying In, Haughton Mifflin Harcourt (New Harvest), page 278,
      She tried counting Chen primes. 2, 3, 5... 7, 11... 13... 17... She couldn't concentrate.
    • 2014, Christian Bessiere et al., “Reasoning about Constraint Methods”, in Duc-Nghia Pham, Seong-Bae Park, editors, PRICAI 2014: Trends in Artificial Intelligence, Springer, page 804:
      There are even magic square of primes, like this one containing Chen primes discovered by Rudolf Ondrejka: […]
    • 2014, Rajesh Kumar Thakur, The Power of Mathematical Numbers, Ocean Books, page 155:
      A prime number p is called a Chen prime if p + 2 is either a prime or a product of two primes. […] There are infinitely [many] Chen primes and the first ten are: 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29.

See also

Further reading

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