9 3 x 5 3 7 July 8, 2019 16 32 64 128 (- 9 2 3 x 3 3 5 7 4 2 3 x 5 )- 3 2 x 7 )+ 4x 9 3 9 x 7 11 x 5 3 x 11 9 14 x 7 5 3 3 14
