Major steps in solving it may be Chen's theorem, which uses the Selberg Sieve, and a result by Schnirelmann that uses a Brun sieve.
A paper by Bamberg relates this theorem to the crystallographic restriction theorem, and it is classified as a Schinzel hypothesis H-sub-n in analytic number theory. Major steps in solving it may be Chen's theorem, which uses the Selberg Sieve, and a result by Schnirelmann that uses a Brun sieve. Hardy and Littlewood showed that its weak form holds true if the Riemann Hypothesis is true, and Vinogradov determined a sufficiently large odd number for its weak form to hold true. Its simplicity has led cranks such as G. Spencer-Brown and H.A. Pogorzelski to claim proofs of it. Its current formulation was stated by Euler, though it is still named for a teacher of his.  FTP, identify this unproven mathematical theorem which states that every even integer greater than 2 can be written as the sum of two prime numbers.
A paper by Bamberg relates this theorem to the crystallographic restriction theorem, and it is classified as a Schinzel hypothesis H-sub-n in analytic number theory.
{Goldbach} conjecture