0b1000110101001

0b1000110101001 is a binary numeral literal used in many programming languages to express a value in base two. The 0b prefix signals that the digits that follow should be interpreted as binary.

This particular value consists of 13 bits. In decimal notation it equals 4521, and in hexadecimal it is 0x11A9. When padded to 16 bits for alignment, the bit pattern becomes 0001000110101001. Such padding is common when displaying or comparing numbers in fixed-width formats.

Bitwise interpretation shows that the ones are located at bit positions 12, 8, 7, 5, 3, and 0, counting from zero for the least significant bit. This makes the pattern useful for discussions of bit masks, flags, or compact data encoding, where each bit may represent a distinct option or state.

In practice, the literal can serve as a constant in source code, a value stored in memory, or as part of data transmitted or processed by software. The exact size of the integer produced by the literal depends on the language and the runtime environment (for example, 32-bit or 64-bit integers are common).

Notes: the same value can be expressed in other bases as decimal 4521 or hexadecimal 0x11A9. The 0b prefix is common in modern languages such as Python, JavaScript (ES2020), Rust, and newer versions of C++, though not all languages support binary literals.