Loading web-font TeX/Math/Italic

Problem #132

Functions

For a complex number z, given a function f(z)=\sum_{i=1}^{n}\frac{1}{i^{z}} .

Let p_{j} be the j-th prime number g(z) = \prod_{j=1}^{m}(1-p_{j}^{-z})

Let x = \lim_{n, m\rightarrow \infty} f(z)*g(z)

Find the value of \sum_{i=1, gcd(i, k) = x}^{i=k}1 ,where k = 354216846978542365.

Contributed by Vaibhav Daga

Solved by 75 users

Log in to submit answers.

Is something wrong?

Maintaining a collection of high quality questions is our top priority. If, however, you do find an error, report the problem and we'll make sure it is reviewed soon.