303

303 is the natural number that comes after 302 and before 304. It is an odd, composite integer. In Roman numerals it is written CCCIII, and its prime factorization is 3 × 101.

In telecommunication, 303 is known as the area code for the Denver metropolitan area in Colorado, United States. It was originally assigned in 1947 as one of the original North American area codes; as demand grew, additional overlay codes were introduced to serve the same region.

In computing and the web, 303 See Other is an HTTP status code used to indicate that a resource has been moved to another URI. The client is expected to issue a new request to the provided URI, and this is commonly used after a POST request to redirect the client to a results page or confirmation page.

AISI 303 is a free-machining grade of stainless steel in the austenitic family. It is designed to improve machinability through the addition of sulfur or other additives, which makes it easier to machine but can slightly reduce certain corrosion resistance characteristics. It remains suitable for many applications that require good formability and moderate corrosion resistance, particularly where machining efficiency is a priority.

Historically, the year 303 CE is associated with the beginning of the Diocletianic Persecution of Christians in the Roman Empire, during which authorities ordered churches closed and Christians faced systematic arrest and execution.