2 x 4 81 July 8, 2019 16 32 64 128 X 2 4x 4 81 9 2 x 81 4 X 2 9x 81 4 X 2 18x 81 4 X 4 2 81 0 X 4 81x 2 X 4 81x 2 0 X 4 18x 2 81 0 X 4 82x 2 81 0 3 x 4 2 81 6 x 2 81 * 4 x 3 4 x 2 81 256 2 x 1 4 81 X 2 9x 81 4 factored X 2 4 3 1 81
