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This is a survey of literature on selected topics in elementary number theory. There are five chapters:
There are two approaches one can take to this project. One is typified by the book History of the Theory of Numbers, by L.E. Dickson, which is a straight reporting of the literature. The other is Unsolved Problems in Number Theory, by R. K. Guy, which strives to give an overview and a synthesis of the literature.
Both approaches have their advantages. In this book, the authors have followed Dickson's approach. Of course, they have to be more selective about their topics because the literature is much more extensive now than it was in Dickson's time.
Overall, this book should be of interest to anyone doing (or planning to do) research in elementary number theory, particularly in the topics of the chapter headings.