This number is a prime.
A palindromic prime formed from the number of the beast trapped between two lowly emirps. [Green]
The smallest palindromic beastly prime such that prime
(3+1+6+6+6+1+3) = 5213131351 is prime, where (.) denotes
concatenation. The next such prime is 3466643. [Bajpai]
(There is one curio for this number that has not yet been approved by an editor.)
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