👉 Octenary is a term used in mathematics to describe an algebraic structure where every element has two distinct prime factors. It is named after the Greek letter "o" (rho), which represents the number 10, and the Latin word "augendus," meaning "fourth." This concept can be applied to various mathematical structures such as quadratic fields, modular arithmetic, or groups of integers. In a group of order 12, for example, there are two distinct prime factors:
