83257

This number is a prime.

The only 5-digit tetranacci prime number defined by the four prime digits, (T₀=2, T₁=3, T₂=5, T₃=7), and the recurrence relation: T_n=T_n-1 + T_n-2 + T_n-3 + T_n-4. Note that it is the 18th tetranacci prime of this kind and the first that contains all of the prime digits. [Loungrides]