Number theory
BRANCH OF PURE MATHEMATICS DEVOTED PRIMARILY TO THE STUDY OF THE INTEGERS
Theory of numbers; Elementary number theory; Number Theory; Number theorist; Number theorists; Num theory; Higher arithemetic; Higher arithmetic; Combinatorial number theory; History of number theory; Applications of number theory; Number theoretic
Number theory (or arithmetic or higher arithmetic in older usage) is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions. German mathematician Carl Friedrich Gauss (1777–1855) said, "Mathematics is the queen of the sciences—and number theory is the queen of mathematics.