0x1D81

0x1D81 is a hexadecimal integer literal commonly used in computer programming. The prefix 0x signals that the value is given in base 16, a common notation for expressing bit patterns, addresses, and other low-level values in source code.

Numerical value and representation: In decimal, 0x1D81 equals 7553. In binary, it is 0001110110000001 (for a 16-bit representation). In memory, it comprises two bytes: 0x1D and 0x81, with the order depending on the system’s endianness (big-endian stores 0x1D first, little-endian stores 0x81 first).

Unicode context: If interpreted as a Unicode code point U+1D81, it lies within the Phonetic Extensions block (U+1D00 to U+1D7F). This range is used for phonetic transcription symbols and related modifier letters. The actual character shown depends on font support and rendering, so the glyph may vary between environments.

Computing usage: As a hex literal, 0x1D81 can appear in source code as a constant, part of a bit mask, or as a value used in memory addressing and low-level operations. In graphics or embedded systems that use 16-bit color values, a value like 0x1D81 might be interpreted as a 16-bit color in a 5-6-5 RGB layout, with the exact color components determined by the color format and endianness.

See also: Hexadecimal literals, Unicode code points, endianness, 5-6-5 RGB color format.