5953

This number is a prime.

+ The number of palindromic primes less than ten billion is also a star number and the reverse concatenation of two consecutive sexy primes. [Green]

+ The largest prime formed from the concatenation in reverse order of a pair of double-digit sexy right-truncatable primes (53, 59). [Loungrides]

(There are 2 curios for this number that have not yet been approved by an editor.)

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