A138044 Primes formed from the concatenation of primitive Pythagorean triples.
81517, 202129, 6091109, 19180181, 68285293, 92525533, 120391409, 145408433, 168775793, 205828853, 225272353, 261380461, 300589661, 5598401009, 6458121037, 7059921217, 7999601249, 8536123613, 19521082117, 22814351453
Offset: 1
Examples
Entries 7999601249 and 8536123613,for instance,are primes obtained respectively from the primitive Pythagorean triples (799,960,1249,) and (85,3612,3613).
Formula
Prime terms of A138043.