54973

This number is a prime.

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+ A prime whose alternate digits (54973) segregate and reunite into the two smallest daughter primes p (593 and 47) that generate primes of forms pNp and NpN, N being respectively any appropriate prime and nonprime digit : 5933593 ; 35933 ; 5937593 ; 75937 ; 47147 ; 1471 ; 47947 ; 9479. [Beedassy]

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