3 x 5 x 7 11 x 13 x 17 July 8, 2019 16 32 64 128 2 x 3 x 5 x 7 x 11 x 13 x 17 x 19 2 x 3 x 5 x 7 x 11 x 13 x 17 x 19 x 23 2 x 3 x 5 x 7 x 11 x 13 x 17 5 x 7 = 35 3 x-5=x+3