0x15B

0x15B is a hexadecimal literal commonly used in programming to denote the value 0x15B. In base-16 notation, the prefix 0x indicates hexadecimal, and the digits 1, 5, and B correspond to the values 1, 5, and 11. The decimal value is calculated as 1×16^2 + 5×16 + 11 = 256 + 80 + 11 = 347.

In many programming languages, such as C, C++, Java, JavaScript, and Python, a literal starting with 0x denotes a hexadecimal number. Hex literals are frequently used for low-level tasks such as memory addresses, bit masks, or constants that map directly to binary data. The exact interpretation of 0x15B in code depends on the surrounding context, including integer width and whether the type is signed or unsigned.

Hexadecimal notation is popular in computing because each hex digit represents four binary bits, allowing compact representation of binary data like addresses or hardware registers. However, the use of 0x prefixes can vary by language; some languages or tools may adopt different conventions for numeric literals. In web development, color specifications are typically written as #RRGGBB or #RGB rather than with an 0x prefix, though hexadecimal color values are related in concept.

See also: hexadecimal numeral system, binary, memory address, integer literal.