An Introduction to the Theory of Numbers (Oxford Mathematics)

Review from previous edition Mathematicians of all kinds will find the book pleasant and stimulating reading, and even experts on the theory of numbers will find that the authors have something new to say on many of the topics they have selected... Each chapter is a model of clear exposition, and the notes at the ends of the chapters, with the references and suggestions for further reading, are invaluable. (Nature)

This fascinating book... gives a full, vivid and exciting account of its subject, as far as this can be done without using too much advanced theory. (Mathematical Gazette)

...an important reference work... which is certain to continue its long and successful life... (Mathematical Reviews)

...remains invaluable as a first course on the subject, and as a source of food for thought for anyone wishing to strike out on his own. (Matyc Journal)