13471...10349 (120-digits)

This number is a prime.

                      1347111829 4776123199 3225218431 3642207357 1577893491
5127244763 9603640791 0368216776 1271443439 2047106471 1498511860 4983010349

When you concatenate the first 31 terms of the Lucas sequence, you obtain this prime number. [Hartley]