Stefanescu's Theorem is a result in the field of mathematics, specifically in the area of number theory. It provides a criterion for determining the divisibility of certain types of numbers, particularly those related to prime numbers. The theorem helps mathematicians understand the properties of numbers and their relationships. The theorem is named after the Romanian mathematician Octav Stefanescu, who contributed to the study of number theory in the early 20th century. By establishing this theorem, he provided tools for further exploration of divisibility and its implications in various mathematical contexts.