This problem requires you to read the following scientific article:

http://math.colgate.edu/~integers/u76/u76.pdf

These answers should be related to this paper.

Questions are attached in the image; please answer mainly d, e and f

Those are the main problems I need to solve; please solve them.
Attachments
The Questions
Screenshot 2021-11-18 at 12.04.34 PM.png (382.73 KiB) Viewed 60 times
Guest

I see nothing to "solve" here! Just read the article and repeat definitions given there. Have YOU read the article?
Guest

The "$$\phi$$" in the "Brun-Titchmarsch Theorem" is the "Euler phi function": https://www.whitman.edu/mathematics/hig ... 03.08.html