I have two unrelated questions about the Riemann hypothesis.

**(A):**

It is easily seen that the following are equivalent:

1) The twin prime conjecture, 

2) There is an infinite twin prime in every nonstandard model of arithmetic.

>**Question 1.** Is there such a formulation for Riemann hypothesis in terms of nonstandard models of arithmetic?

**(B):**


> **Question 2.** What is known about the situation (truth or falsity) of Riemann hypothesis in the Zilber's field?