In mathematics, a prime number p is called a Chen prime if p + 2 is either a prime or a product of two primes (also called a semiprime). The even number...

This is a list of articles about prime numbers. A prime number (or prime) is a natural number greater than 1 that has no positive divisors other than...

including Chen's theorem and the Chen prime. Chen was the third son in a large family from Fuzhou, Fujian, China. His father was a postal worker. Chen Jingrun...

prime is a prime that has a prime gap of two. Sometimes the term twin prime is used for a pair of twin primes; an alternative name for this is prime twin...

821 = prime number, twin prime, Chen prime, Eisenstein prime with no imaginary part, lazy caterer number (sequence A000124 in the OEIS), prime quadruplet...

accepted to be 666) 617 = prime number, sum of five consecutive primes (109 + 113 + 127 + 131 + 137), Chen prime, Eisenstein prime with no imaginary part...

consecutive primes (173 + 179 + 181 + 191 + 193) 918 = 2 × 33 × 17, Harshad number 919 = prime number, cuban prime, prime index prime, Chen prime, palindromic...

401 is a prime number, tetranacci number, Chen prime, prime index prime Eisenstein prime with no imaginary part Sum of seven consecutive primes (43 + 47...

is: a prime number. a safe prime. the sum of three consecutive primes (163 + 167 + 173). the sum of the cubes of the first four primes. a Chen prime an Eisenstein...

Commercial Airplanes. 701 = prime number, sum of three consecutive primes (229 + 233 + 239), Chen prime, Eisenstein prime with no imaginary part 702 =...

1 is prime 1019 = Sophie Germain prime, safe prime, Chen prime 1020 = polydivisible number 1021 = twin prime with 1019. It is also a Lucky prime. 1022...

centered heptagonal number. 317 is a prime number, Eisenstein prime with no imaginary part, Chen prime, one of the rare primes to be both right and left-truncatable...

ahmaad following 970 and preceding 972. 971 is a prime number, an emirp, a Chen prime and an Eisenstein prime. Some uses of 971: +971, the country calling...

primes as prime divisors. This strange coincidence was the beginning of the theory of monstrous moonshine. All supersingular primes are Chen primes,...

67 is: the 19th prime number (the next is 71). a Chen prime. an irregular prime. a lucky prime. the sum of five consecutive primes (7 + 11 + 13 + 17...

written as a sum of three primes. Chen's theorem says that every sufficiently large even number can be expressed as the sum of a prime and a semiprime (the...

89 is: the 24th prime number, following 83 and preceding 97. a Chen prime. a Pythagorean prime. the smallest Sophie Germain prime to start a Cunningham...

is a Sophie Germain prime, an emirp, an isolated prime, a Chen prime and a Proth prime as it is a prime number of the form 7 × 2 4 + 1. {\displaystyle 7\times...

Chen Li-an (Chinese: 陳履安; pinyin: Chén Lǚ'ān; born 22 June 1937 in Qingtian, Zhejiang, Republic of China), sometimes spelled Chen Lu-an, is a Taiwanese...

prime. Because the next odd number, 129, is a semiprime, 127 is a Chen prime. 127 is greater than the arithmetic mean of its two neighboring primes;...

preceding 108. 107 is the 28th prime number. The next prime is 109, with which it comprises a twin prime, making 107 a Chen prime. Plugged into the expression...

Engineering at Columbia University Chen Jingrun (陳景潤; 1933–1996), mathematician, known for Chen prime and Chen's theorem Chen Jiun-Shyan, American engineering...

Friedlander-Iwaniec prime. Smallest prime separated by at least 40 from the nearest primes (38461 and 38543). It is thus an isolated prime. Chen prime. 38807 = number...

the 63rd prime number and an odd prime number. It is an isolated (i.e., not twin) prime, but because 309 is a semiprime, 307 is a Chen prime. 307 is the...

prime number. The previous is forty-one, with which it comprises a twin prime, and the next is 47. 43 is the smallest prime that is not a Chen prime....

form 3 n − 1 {\displaystyle 3n-1} . Since 913 is a semiprime, 911 is a Chen prime. It is also a centered decagonal number. There are 911 inverse semigroups...

number theory, Chen's theorem states that every sufficiently large even number can be written as the sum of either two primes, or a prime and a semiprime...

In mathematics, a Mersenne prime is a prime number that is one less than a power of two. That is, it is a prime number of the form Mn = 2n − 1 for some...

which it is also a cousin prime) and preceding 89. a Sophie Germain prime. a safe prime. a Chen prime. an Eisenstein prime with no imaginary part and...

engineer of Mongolian origin Chen Jingrun (1933–1996), a widely known mathematician who invented the Chen's theorem and Chen prime Wang Wen-hsing (born 1939)...