This number is a prime.
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The only prime formed from the ordered concatenation of two 2-digit successive emirps, i.e., 31, 37, so that the ordered concatenation of their reversals, i.e., 1373, is also prime. [Loungrides]
The larger of only two primes of form n^2+1 concatenated from two consecutive double-digit primes, i.e., 3137=56^2+1. The other is 2917 = 54^2+1. [Loungrides]
The only Honaker prime concatenated from two double-digit emirps. [Loungrides]
The smallest of only three right-truncatable primes formed by concatenating two double-digit emirps. The other are 3797 and 7331. [Loungrides]
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