The number 281 is an integer that follows 280 and precedes 282. It is an odd number and can be expressed as the sum of two prime numbers: 281 = 2 + 279. In mathematics, it is also known for being a composite number, as it can be divided by 1, 13, 21, and 281 itself. In the context of mathematics, 281 is notable for being a prime number when considered in certain bases. It is also used in various applications, such as coding and numbering systems, where it can represent a specific value or identifier.