Found by Batalov, this number is a "base 19 minimal prime" (not sure its index, but must between 31412 and 31435) as described on http://primes.utm.edu/glossary/xpage/MinimalPrime.html if we only count the primes > base, see https://github.com/xayahrainie4793/minimal-elements-of-the-prime-numbers for more information.

To be completed...