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### Prime number cross

In the prime number cross you can show the prime numbers and prime twins.

##### Explanation

In the centre is the 0, because it appears in both the unit circle and in the number circle. The inner border starts with 1, and runs to 24.

 165 166 167 168 145 146 147 164 141 142 143 144 121 122 123 148 140 117 118 119 120 97 98 99 124 116 93 94 95 96 73 74 75 100 92 69 70 71 72 49 50 51 76 68 45 46 47 48 25 26 27 52 44 21 22 23 24 1 2 3 28 20 4 163 139 115 91 67 43 19 5 29 53 77 101 125 149 162 138 114 90 66 42 18 0 6 30 54 78 102 126 150 161 137 113 89 65 41 17 7 31 55 79 103 127 151 160 136 112 88 64 40 16 8 32 56 80 104 128 152 15 14 13 12 11 10 9 39 38 37 36 35 34 33 63 62 61 60 59 58 57 87 86 85 84 83 82 81 111 110 109 108 107 106 105 135 134 133 132 131 130 129 159 158 157 156 155 154 153

Between prime twins is a number that is always a multiple of 6. The number 2 is the only even prime number. Only the prime number 3 does not meet the form 6n ± 1.