The Theory of Numbers and Diophantine Analysis (Deseret Alphabet edition)

Robert D. Carmichael (1879-1967) was an American mathematician. Carmichael is known for his research number theory and the study of the prime numbers. Among other discoveries, he identified the first composite number to satisfy the Fermat primality test (561). Such numbers are now called Carmichael numbers in his honor.
Early in his career, he wrote two elementary texts on number theory, The Theory of Numbers and Diophantine Analysis. These cover such topics as prime numbers, quadratic residues, and Fermat's Last Theorem. They require little more than high school algebra, and their clear style makes them excellent introductions to an important branch of modern mathematics.
This book is in the Deseret Alphabet, a phonetic alphabet for writing English developed in the mid-19th century at the University of Deseret (now the University of Utah).