Three conjectures on probably infinite sequences of primes created through concatenation of primes with the powers of 2

In this paper I present three conjectures, i.e.: (1) For any prime p greater than or equal to 7 there exist n, a power of 2, such that, concatenating to the left p with n the number resulted is a prime (2) For any odd prime p there exist n, a power of 2, such that, subtracting one from the number resulted concatenating to the right p with n, is obtained a prime (3) For any odd prime p there exist n, a power of 2, such that, adding one to the number resulted concatenating to the right p with n, is obtained a prime.