3 7 x 63 1 July 8, 2019 16 32 64 128 1 3 7 15 x 63 y 3 7 15 x 63 3 7 x 12 63 3 7 15 x 63 127 9 x 5 63 7 3 x 12 3 11 of 5 7 of x 63 63 × 7 3 x 73
