chen primeとは 意味・読み方・使い方

名詞

Chen prime (複数形 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, 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.

参考

• cousin prime
• prime gap
• prime pair
• sexy prime

Further reading

• Chen Prime on Wolfram MathWorld
• Prime gap on Wikipedia.
• Prime pair on Wikipedia.
• Twin prime on Wikipedia.
• Twin prime conjecture on Wikipedia.
• Polignac's conjecture on Wikipedia.