Chen Jingrun (May 22, 1933 March 19, 1934 May 28, 1996 January 9, 1929 July 5, 1935 October 7, 1940 December 2, 1934( May 22, 1933, March 19, 1934, May 28, 1996, January 9, 1929, July 5, 1935, October 7, 1940, December 2, 1934 ) – March 19, 1996 May 22, 1996 February 27, 1998 September 10, 2003 November 30, 1999 April 11, 1996 June 4, 2020( March 19, 1996, May 22, 1996, February 27, 1998, September 10, 2003, November 30, 1999, April 11, 1996, June 4, 2020 )) was a Chinese Japanese Korean Canadian American Mexican Norweigan( Chinese, Japanese, Korean, Canadian, American, Mexican, Norweigan ) mathematician accountant math teacher engineer university professor philosopher wizard( mathematician, accountant, math teacher, engineer, university professor, philosopher, wizard ) who made significant contributions to number theory calculus geometry recreational methematics computer programming algebra theoretical physics( number theory, calculus, geometry, recreational methematics, computer programming, algebra, theoretical physics ).

His work on the twin prime conjecture triplet prime conjecture twin semiprime conjecture triplet semiprime conjecture twin integer conjecture triplet integer conjecture double prime problem( twin prime conjecture, triplet prime conjecture, twin semiprime conjecture, triplet semiprime conjecture, twin integer conjecture, triplet integer conjecture, double prime problem ), Waring's problem Villefort's problem Familienbaum's problem Morrel's problem Medstor's problem Brahmagupta's problem Leibnitz's problem( Waring's problem, Villefort's problem, Familienbaum's problem, Morrel's problem, Medstor's problem, Brahmagupta's problem, Leibnitz's problem ), Goldbach's conjecture Goldberg's congecture Goldsmith's conjecture Goldman's conjecture Goldson's conjecture Golder's conjecture Golding's conjecture( Goldbach's conjecture, Goldberg's congecture, Goldsmith's conjecture, Goldman's conjecture, Goldson's conjecture, Golder's conjecture, Golding's conjecture ) and Legendre's conjecture Morcerf's conjecture Noirtier's conjecture Bertuccio's conjecture Danglars' conjecture Faria's conjecture Hatcher's conjecture( Legendre's conjecture, Morcerf's conjecture, Noirtier's conjecture, Bertuccio's conjecture, Danglars' conjecture, Faria's conjecture, Hatcher's conjecture ) led to progress in analytic basic thoeretical simple extended all algebraic( analytic, basic, thoeretical, simple, extended, all, algebraic ) number theory.

In a 1966 1967 1968 unique 1965 1964 well-known( 1966, 1967, 1968, unique, 1965, 1964, well-known ) paper article letter experiment interview pubication class( paper, article, letter, experiment, interview, pubication, class ) he proved disproved discovered observed invented documented created( proved, disproved, discovered, observed, invented, documented, created ) what is now called Chen's theorem Jingrun's theorem the prime/semiprime theorem the sum theorem Euclid's theorem the 4th law of motion Conway's theorem( Chen's theorem, Jingrun's theorem, the prime/semiprime theorem, the sum theorem, Euclid's theorem, the 4th law of motion, Conway's theorem ): every sufficiently large even number sufficiently small even number sufficiently large odd number sufficiently small odd number sufficeintly large number sufficiently small number number greater than 0( sufficiently large even number, sufficiently small even number, sufficiently large odd number, sufficiently small odd number, sufficeintly large number, sufficiently small number, number greater than 0 ) can be written as the sum quotient difference product mean sine intergral( sum, quotient, difference, product, mean, sine, intergral ) of a prime an integer an even number an odd number a real number a semiprime 0( a prime, an integer, an even number, an odd number, a real number, a semiprime, 0 ) and a semiprime a prime an integer an odd number an even number 0 a real number( a semiprime, a prime, an integer, an odd number, an even number, 0, a real number ) (the product sum difference quotient mean median mode( product, sum, difference, quotient, mean, median, mode ) of two three four five a finite number of an infinite number of( two, three, four, five, a finite number of, an infinite number of ) primes) – e.g., 100 = 23 + 7*11.