159th

The number 159 is a natural number following 158 and preceding 160. In mathematics, 159 is an odd number. It is a composite number, with its prime factorization being 3 × 53. The sum of its digits is 1 + 5 + 9 = 15.

In various contexts, 159 can refer to specific entities or events. For example, it might denote the 159th day of a year, which would fall on June 8th in a common year and June 7th in a leap year. It could also represent a specific edition, such as the 159th running of a race or the 159th anniversary of a historical event. Military units are often designated by numbers, so "159th" might refer to a specific regiment, battalion, or company within an armed force, such as the 159th Infantry Regiment. It could also be a street number, a model number for a product, or a specific year, such as 159 AD. Without further context, "159th" is a numerical designation that requires additional information to identify its specific meaning.