2016•Unpublished venueOpen access
Primes obtained concatenating a prime p to the left with 3 and to the right with a square of prime q^2
Marius Coman
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Abstract
In this paper I make the following conjecture: for any prime p of the form 6*k + 1 there exist an infinity of primes n obtained concatenating p to the left with 3 and to the right with a square of prime q^2 (examples: for p = 13, the numbers n = 313289, 313961, 3131369 – obtained for q = 17, 31, 37 – are primes).