books.google.com - This 2003 undergraduate introduction to analytic number theory develops analytic skills in the course of studying ancient questions on polygonal numbers, perfect numbers and amicable pairs. The question of how the primes are distributed amongst all the integers is central in analytic number theory. This...https://books.google.com/books/about/A_Primer_of_Analytic_Number_Theory.html?id=YqQA5yWE22YC&q=infinite+series&utm_source=gb-gplus-shareA Primer of Analytic Number Theory