0x1729

0x1729 is a hexadecimal integer literal, using the 0x prefix that denotes base-16 notation in many programming languages. It is a common example value in tutorials and code samples to illustrate hex constants and related operations.

The value of 0x1729 in decimal is 5929. This number is a perfect square, since 5929 = 77 × 77. The four hex digits 1, 7, 2, and 9 encode this single value in hexadecimal form, with 0x1729 representing the 16-bit value that fits within the range 0x0000 to 0xFFFF.

As a 16-bit quantity, 0x1729 may be stored in memory in different byte orders depending on endianness. In little-endian systems it is typically represented as the byte sequence 0x29, 0x17, whereas in big-endian systems it appears as 0x17, 0x29. This illustrates how the same value can have different byte layouts across architectures.

In practical use, 0x1729 commonly appears in programming examples to demonstrate hexadecimal literals, bitwise operations, masking, and tests for parsers or encoders. It has no special semantic meaning beyond being a representative non-trivial constant, though its property as a square (5929 = 77^2) is a point of mathematical curiosity.

See also: hexadecimal notation, endianness, memory representation, numeric literals.