308

308 is a natural number that comes after 307 and before 309. In mathematics, it is an even composite number with a prime factorization of 2^2 × 7 × 11. It has several divisors, including 2, 4, 7, 11, 14, 22, 28, 77, 154, and 308. The sum of its digits is 11, making 308 a Harshad number in base 10. In Roman numerals, 308 is written CCCVIII.

The number 308 appears in various contexts beyond pure mathematics. Common uses include:

- Year 308 CE (AD), a year in late antiquity during the Roman Empire.

- .308 Winchester, a widely used rifle cartridge often simply referred to as “308,” with a standard 7.62×51mm NATO relation.

- HTTP status code 308 Permanent Redirect, which indicates that a resource has been permanently moved to a new URL and that the request method should be preserved.

- Area code 308, covering central and western Nebraska in the United States.

Overall, 308 is primarily recognized as a numerical value with several practical associations in firearms, computing, and telecommunications, as well as historical references tied to specific years.