2469₁₀ = 34334₅ = 3343₉.

2469 * 5 = 12345.

These numbers are all prime: 139 * 2²⁴⁶⁹ - 1; 2469!! + 2³; 2 + 2²⁴⁶⁹ + 3²⁴⁶⁹; 2469# + 2²⁴⁶⁹ + 1. ("2469#" is the product of the primes <= 2469.)

There were some other oddities that I didn't have the patience to try and understand, but there seemed less interesting stuff than for 6752.

Hugo