3 ms·
Look at base 11: there are a lot of rarefied diagonals (which correspond to any prime + the base (11) + 2, or prime + 13). I wonder if prime + other_prime is
by philsnow 11y ago
Look at base 11: there are a lot of rarefied diagonals (which correspond to any prime + the base (11) + 2, or prime + 13). I wonder if prime + other_prime is rarefied in general.
https://play.golang.org/p/t3o00iEQgF https://play.golang.org/p/t3o00iEQgF