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: Tn=Tn-1 + Tn-2 + Tn-3 + Tn-4. Note that it is the 18th tetranacci prime of this kind and the first that contains all of the prime digits. [Loungrides]

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