False True False vertical True False 1 ref1 0 True False 2 ref2 1 True False 3 ref3 2 True False 4 = 2 * 2 ref4 3 True False 5 ref5 4 True False 6 = 2 * 3 ref6 5 True False 7 ref7 6 True False 8 = 2 * 2 * 2 ref8 7 True False 9 = 3 * 3 ref9 8 True False 10 = 2 * 5 ref10 9 True False 11 ref11 10 True False 12 = 2 * 2 * 3 ref12 11 True False 13 ref13 12 True False 14 = 2 * 7 ref14 13 True False 15 = 3 * 5 ref15 14 True False 16 = 2 * 2 * 2 * 2 ref16 15 True False 17 ref17 16 True False 18 = 2 * 3 * 3 ref18 17 True False 19 ref19 18 True False 20 = 2 * 2 * 5 ref20 19 True False 21 = 3 * 7 ref21 20 True False 22 = 2 * 11 ref22 21 True False 23 ref23 22 True False 24 = 2 * 2 * 2 * 3 ref24 23 True False 25 = 5 * 5 ref25 24