eightynumber

Eightynumber is a term that refers to the number 80. It is an even, two-digit number that follows 79 and precedes 81 in the sequence of natural numbers. In the decimal numeral system, 80 is represented by the symbol "80". It is a composite number, meaning it has factors other than 1 and itself, specifically 2, 4, 5, 8, 10, 16, 20, and 40. Eightynumber is also a perfect square, as it is the square of 8 (8 x 8 = 64). In various contexts, 80 can hold different significances. For instance, in the United States, a score of 80 is considered a passing grade in many educational systems. In sports, an 80-yard line is a common reference point on a football field. Additionally, 80 is the atomic number of mercury on the periodic table, indicating the number of protons in a mercury atom. The number 80 also appears in cultural references, such as the 80s decade, known for its distinctive fashion, music, and technology.