The book “The Theory of Numbers”, written by a team of authors, is a fascinating and in-depth study of one of the oldest and most mysterious sections of mathematics. This work not only introduces the reader to the basics of number theory, but also immerses him in the world of mathematical secrets and discoveries that have worried the minds of scientists for centuries. Number theory is not just a set of formulas and theorems, it is a whole universe where each number has its own history and character. The book deals with such important topics as prime numbers, divisibility, Fermat and Euler theorems, as well as more complex concepts such as cryptography and algebraic number theory. The reader will be able to learn about how numbers affect our daily lives, from data encryption to algorithms that control modern technology. This book will be of interest to students and teachers of mathematics, as well as to anyone who wants to understand more deeply how numbers shape our world. It is suitable for both high school students and university students, as well as for mathematics lovers seeking to expand their knowledge. If you are interested in mathematics, logic, or just want to learn more about how numbers affect our lives, then the Theory of Numbers will be a real discovery for you. One of the key themes raised in the book is the beauty and symmetry of numbers. The authors show how primes such as 2, 3, 5 and 7 become the basis for complex mathematical structures. They explore how numbers are related and how their properties can be used to solve various problems. The reader will see how number theory intersects with other areas of mathematics, such as combinatorics and geometry, and how these connections open up new horizons for research. The style of the authors is distinguished by clarity and accessibility, which makes complex concepts understandable even for those who do not have deep knowledge in mathematics. The book is filled with examples, tasks and illustrations that help to better absorb the material. The authors seek not only to educate, but also to inspire the reader, showing that mathematics is not only a science, but also an art. The team of authors working on this book includes both experienced mathematicians and young researchers, which gives the work freshness and relevance. Their previous works cover a wide range of topics, from elementary mathematics to complex theories, and in Number Theory, they combine their knowledge and experience to create a unique and valuable work. If you are looking for books that are similar in genre, pay attention to “Mathematics for All” from Igor Shafarevich or “Numbers: History and Mysteries” from David Singer. These works also explore the world of numbers, but from different points of view, which allows the reader to get a more complete idea of mathematics. In conclusion, the book “The Theory of Numbers” is not just a textbook, but a real guiding star in the world of numbers. It opens the door to the fascinating world of mathematics, where each number is not just a symbol, but a whole story full of mysteries and discoveries. This book will surely find a response in the hearts of all who seek to understand and appreciate the beauty of numbers.