Even though an address refers to a particular byte in memory, processors allow for using several bytes of memory in a row. The most common use of this feature is to use either 2 or 4 bytes in a row to represent a number, usually an integer. Single bytes are sometimes also used to represent integers, but because they are only 8 bits long, they can only hold 2 or 256 different possible values. Using 2 or 4 bytes in a row raises the number of different possible values to be 2, 65536 or 2, 4294967296, respectively.