Chen's Theorem

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Every sufficiently large even integer is the sum of either:

$(1): \quad$ two primes, or
$(2): \quad$ a prime and a semiprime.


Source of Name

This entry was named for Chen Jingrun.

Historical Note

Chen's Theorem was proved by Chen Jingrun in $1973$.

As such it made a major inroad into the resolution of the Goldbach Conjecture.