"
The first 100 arithmetic numbers are:
   1   3   5   6   7  11  13  14  15  17
  19  20  21  22  23  27  29  30  31  33
  35  37  38  39  41  42  43  44  45  46
  47  49  51  53  54  55  56  57  59  60
  61  62  65  66  67  68  69  70  71  73
  77  78  79  83  85  86  87  89  91  92
  93  94  95  96  97  99 101 102 103 105
 107 109 110 111 113 114 115 116 118 119
 123 125 126 127 129 131 132 133 134 135
 137 138 139 140 141 142 143 145 147 149

The 1000th arithmetic number is 1361
(782 composite numbers up to here)

The 10000th arithmetic number is 12953
(8458 composite numbers up to here)

The 100000th arithmetic number is 125587
(88219 composite numbers up to here)

The 1000000th arithmetic number is 1228663
(905043 composite numbers up to here)"