On unlike powers of primes and powers of 2
The authors prove that every sufficiently large even integer is a sum of a prime, a square of a prime, two cubes of primes, and 161 powers of 2. They also prove that a quantitative version of the Hardy-Littlewood conjecture for twin primes implies that one may replace 161 by 138 in the previous statement.
scientific article; zbMATH DE number 6151219
scientific article