The only 5-digit tetranacci prime number defined by the
four prime digits, (T_{0}=2, T_{1}=3, T_{2}=5, T_{3}=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]