2 2 x 1 128 July 8, 2019 16 32 64 128 If 2 x 1 2 x 1 1280 then x 2 x 1 2 x 1 1280 4 x 1 2 x 2 128 1 2 x 1 2 x 2 5 128 1 x 1 2 x 2 2 + 1 = 2