Prime plus power of 2

1 · John Cook · May 4, 2020, 3:40 p.m.
A new article [1] looks at the problem of determining the proportion of odd numbers that can be written as a power of 2 and a prime. A. de Polignac conjectured in 1849 that all odd numbers have this form. An immediate counterexample is 3, and so apparently the conjecture was that every odd number […]...