Identified using PARI s ispseudoprime, unmodified. This is the analogue of 2357 in base 47133 -- i.e, 2*47133^4861 + 3*47133^4860 + 5*47133^4859 + ... + 47119*47133^2 + 47123*47133 + 47129 (ispseudoprime(sum(i=1,4862,prime(i)*47133^(4862-i)))==1 is true).

To be completed...