Question 1068756
<pre>
All the 2 digit prime numbers are:

11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47,
53, 59, 61, 67, 71, 73, 79, 83, 89, 97


All 4-digit numbers of the form ABCA, where A,B, and C are
all different and AB, BC, and CA are all prime numbers are:

1371, 1731, 1971, 3173, 3713, 7137, 7197, 7317, 9719,

Edwin</pre>