2393

This number is a prime.

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(2393, 3329) is the only pair of anagram primes each expressed as sum of powers using the prime digits as bases and as exponents, i.e., 2393 = 2^5 + 3^7 + 5^3 + 7^2 and 3329 = 2^7 + 3^3 + 5^5 +7^2. [Loungrides]