The product is the “Elementary Number Theory” textbook by David M. Borton, third edition (1994 hardcover). This textbook is designed for elementary school students and covers the subject area of mathematics, specifically focusing on number theory. The book is written in English and published by William C. Brown Publishers in the United States. With an advanced level of difficulty, this textbook is suitable for intermediate learners looking to delve deeper into the concepts of elementary number theory.