Unsolved Problems in Number Theory (2 ed)

This monograph contains discussions of hundreds of open questions, organized into 185 different topics.

They represent aspects of number theory and are organized into six categories: prime numbers, divisibility, additive number theory, Diophantine equations, sequences of integers, and miscellaneous.

To prevent repetition of earlier efforts or duplication of previously known results, an extensive and up-to-date collection of references follows each problem.

In this second edition, new material has been added in addition to corrections.