Definition of

Number Theory

Number Theory

A branch of mathematics that explores the properties and relationships of integers.

Includes the study of:
• Prime Numbers and Prime Factors
• Divisibility (can one integer be divided by another evenly)
• Cryptography

It is a large and interesting area.

(Note: in mathematics the word theory means "a set of ideas that explain something" NOT the usual English meaning of "an untested idea".)

Number Theory
See: Integer