Elementary Number Theory

This edition offers a clear and engaging introduction to classical number theory, presented chronologically from antiquity to modern techniques. Written in David Burton’s accessible style, the book explains foundational topics such as divisibility, prime numbers, congruences, quadratic reciprocity, and Diophantine equations. It places special emphasis on historical context and intuitive understanding, making it suitable for both beginners and advanced undergraduates. The text is often used for one-semester survey courses or as supplementary reading in survey-level mathematics classes.