A "large number" refers to a quantity that is significantly greater than what is typically encountered in everyday life. In mathematics, large numbers can be represented in various forms, such as exponential notation or scientific notation, to simplify their expression. For example, the number one million can be written as 1 x 10^6, making it easier to read and work with. Large numbers are often used in fields like astronomy, where distances between celestial bodies can reach millions or billions of kilometers. They also appear in statistics, where data sets may include values in the millions or billions, helping researchers analyze trends and patterns in large populations.