An Order-3 Superperfect Prime Square 1 of the 24 possible order-3 perfect prime squares not counting rotations and reflections. Each row, column, and the two main diagonals all consist of 3-digit primes when read in either direction. This one is superperfect because the broken diagonal pairs are also 3-digit prime numbers. The 5 can be replaced with an 8. These are the only order-3 Superperfect prime squares. All order 2 and 3 perfect prime squares contain palindromes and contain duplicate prime numbers. Do only Order-3 perfect prime squares contain palindromic primes?
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