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Zaza
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On modified Euler product

I know this forum is for professional Mathematicians. I didn't know if the following question is fit or not fit for the site. If not feel free to delete it.

Consider the modified Euler product as follows:

$$F(s) = \prod_{p} \left( 1 - \frac{c}{p^s} \right)^{-\ln(p)}$$

Here $c$ is a constant

My questions are

  1. Is there a compact representation for this product?

  2. What are some non-trivial properties of this product?

The motivation behind this is that:

I want to calculate regularized sum as:

$$-\sum_{p}\ln\left( 1 - \frac{1}{(ep)^{1/2}} \right){\ln(p)}$$

(My guess : probably this is equal to zero)

References:

[1] Germund Dahlquist ; "On the analytic continuation of Eulerian products"

[2] https://mathworld.wolfram.com/PrimeProducts.html ( and all the references therein)

[3] https://en.m.wikipedia.org/wiki/Euler_product

Zaza
  • 149
  • 6