0x3DD

0x3DD is a hexadecimal literal used in computing to denote the decimal number 989. The notation begins with the prefix 0x to indicate base-16, followed by the hex digits 3, D, and D. In decimal, 0x3DD equals 3×16^2 + 13×16 + 13 = 989.

In many programming languages, 0x3DD can appear wherever an integer constant is allowed. Hex digits A–F are case-insensitive, so 0x3dd and 0x3DD represent the same value. Languages such as C, C++, JavaScript, Java, Python, and Rust support hex literals, and evaluating 0x3DD yields the integer 989 at runtime.

Beyond simple constants, hexadecimal literals are commonly used for memory addresses, bit masks, offsets, and compact identifiers in low-level code. 0x3DD by itself does not convey a universal meaning; its interpretation depends on the surrounding program, data format, or documentation.

In blockchain and cryptography contexts, the 0x prefix is widely used for hexadecimal data. However, Ethereum addresses are 40 hexadecimal digits long after the 0x prefix, so 0x3DD alone is not a valid address. It may appear as part of a larger hex value in examples or data files.

See also: hexadecimal notation, 0x prefix, decimal system.