the primes arranged according to this matrix
1 2 3 4 5 6 7 8 9
2 4 6 8 1 3 5 7 9
3 6 9 3 6 9 3 6 9
4 8 3 7 2 6 1 5 9
5 1 6 2 7 3 8 4 9
6 3 9 6 3 9 6 3 9
7 5 3 1 8 6 4 2 9
8 7 6 5 4 3 2 1 9
9 9 9 9 9 9 9 9 9
look like this. Note that the first two digits are the last two digits.
2 3 5 7 11 13 17 19 23
3 7 13 19 2 5 11 17 23
5 13 23 5 13 23 5 13 23
7 19 5 17 3 13 2 11 23
11 2 13 3 17 5 19 7 23
13 5 23 13 5 23 13 5 23
17 11 5 2 19 13 7 3 23
19 17 13 11 7 5 3 2 23
23 23 23 23 23 23 23 23 23
reduced numerically
2 3 5 7 2 4 8 1 5
3 7 4 1 2 5 2 8 5
5 4 5 5 4 5 5 4 5
7 1 5 8 3 4 2 2 5
2 2 4 3 8 5 1 7 5
4 5 5 4 5 5 4 5 5
8 2 5 2 1 4 7 3 5
1 8 4 2 7 5 3 2 5
5 5 5 5 5 5 5 5 5
the diagonals
2
3 3
5 7 5
7 4 4 7
2 1 5 1 2
4 2 5 5 2 4
8 5 4 8 4 5 8
1 2 5 3 3 5 2 1
5 8 5 4 8 4 5 8 5
5 4 2 5 5 2 4 5
5 2 1 5 1 2 5
5 7 4 4 7 5
5 5 7 5 5
5 3 3 5
5 2 5
5 5
5