4×256

4×256 denotes the product of the integers 4 and 256. The result is 1024. In prime factorization terms, 256 equals 2^8 and 4 equals 2^2, so the product equals 2^10, or 1024. This makes 1024 a power of two, a property that frequently appears in binary computing and digital memory.

In computing and information technology, 1024 has been used as a size unit in various contexts, particularly in historical memory and storage measurements. A common reference is 1 KiB (kibibyte) = 1024 bytes, although some contexts and marketing materials still use the decimal kilobyte of 1000 bytes. The expression 4×256 can also describe a rectangular data layout, such as a grid with four rows and 256 columns, totaling 1,024 elements. It can likewise describe parameters in graphics or data structures where 256 represents a value range per dimension and 4 indicates the number of groups or channels.

Related concepts include 1024 as a key power-of-two value in computer science, the binary prefix system (KiB for kibibyte), and the general use of powers of two to define memory and storage scales.