1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 100 50 33.3333 25 20 16.6667 14.2857 12.5 11.1111 10 9.09091 8.33333 7.69231 7.14286 6.66667 6.25 5.88235 5.55556 5.26316 5 2 3 4 5 6 7 8 9 10 11 12 13 100 66.66667 50 40 33.33333 28.57143 25 22.22222 20 18.18182 16.66667 15.38462 14.28571 13.33333 12.5 11.76471 11.11111 10.52632 10 100 75 60 50 42.85714 37.5 33.33333 30 27.27273 25 23.07692 21.42857 20 18.75 17.64706 16.66667 15.78947 15 100 80 66.66667 57.14286 50 44.44444 40 36.36364 33.33333 30.76923 28.57143 26.66667 25 23.52941 22.22222 21.05263 20 100 83.33333 71.42857 62.5 55.55556 50 45.45455 41.66667 38.46154 35.71429 33.33333 31.25 29.41176 27.77778 26.31579 25 100 85.71429 75 66.66667 60 54.54545 50 46.15385 42.85714 40 37.5 35.29412 33.33333 31.57895 30 100 87.5 77.77778 70 63.63636 58.33333 53.84615 50 46.66667 43.75 41.17647 38.88889 36.84211 35 100 88.88889 80 72.72727 66.66667 61.53846 57.14286 53.33333 50 47.05882 44.44444 42.10526 40 100 90 81.81818 75 69.23077 64.28571 60 56.25 52.94118 50 47.36842 45 100 90.90909 83.33333 76.92308 71.42857 66.66667 62.5 58.82353 55.55556 52.63158 50 100 91.66667 84.61538 78.57143 73.33333 68.75 64.70588 61.11111 57.89474 55 100 92.30769 85.71429 80 75 70.58824 66.66667 63.15789 60 100 92.85714 86.66667 81.25 76.47059 72.22222 68.42105 65 Focus of Primes (Shaded) 14 15 16 17 18 19 20 100 93.33333 100 87.5 93.75 100 82.35294 88.23529 94.11765 100 77.77778 83.33333 88.88889 94.44444 100 73.68421 78.94737 84.21053 89.47368 94.73684 70 75 80 85 90 100 95 100