Representation of even integers as a sum of squares of primes and powers of two

Shehzad Hathi

Published 2021-09-27, updated 2022-03-07Version 2

In 1951, Linnik proved the existence of a constant $K$ such that every sufficiently large even number is the sum of two primes and at most $K$ powers of 2. Since then, this style of approximation has been considered for problems similar to the Goldbach conjecture. One such problem is the representation of a sufficiently large even number as a sum of four squares of primes and at most $k$ powers of two. In 2014, Zhao proved $k = 46$. In this paper, we improve upon this result by proving $k = 31$.