Authors: Marius Coman
In this paper I make the following conjecture: There exist an infinity of primes obtained concatenating 2*n + 4 with 2*n + 4 then with n where n = 3*p and p is a prime; for example, such primes are 19019093 obtained concatenating 190 = 2*(3*31) + 4 with 190 then with 93 = 3*31 or 12701270633 obtained concatenating 1270 = 2*(3*211) + 4 with 1270 then with 633 = 3*211. Note that for twenty-five from the first eighty primes p are obtained primes with this method.
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[v1] 2017-12-14 09:19:56
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