Hcabdlog's conjecture

Let $b\geq 2$ be a fixed base. For a positive integer, write $\overleftarrow{n}$ for its digit reversal in base $b$. Then $p_1$ and $p_2$ are primes, and $\gcd(\overleftarrow{p_2},b^3-b)=1$. Hcabdlog's conjecture. Every sufficiently large even number $N$ can be expressed as

$$N=p_1+\overleftarrow{p_2}.$$

This conjecture suggests that the exceptional set in the corresponding prime-plus-reversed-prime representation theorem should be $O_b(1)$. The parity restriction is necessary because $b^3-b$ is even, so the admissible reversed prime is odd. It is introduced as a simplified variant of a conjecture of Chourasiya and others.