0b111101011111

0b111101011111 is a binary literal, a numeric constant written with a base-2 prefix (0b) used in several programming languages to indicate that the following digits should be interpreted as binary. The sequence 111101011111 consists of twelve bits and can be read as a single 12-bit value.

In decimal form, this binary pattern equals 3935. In hexadecimal notation, it is 0xF5F (the bits group as 1111 0101 1111). The 12-bit pattern has a Hamming weight of 10, meaning ten of the bits are 1, and two bits are 0 (specifically at positions corresponding to 2^7 and 2^5 in the 12-bit layout).

The binary value can be interpreted in different ways depending on the signing and width assumptions. As an unsigned 12-bit number, 0b111101011111 equals 3935. If interpreted as a signed 12-bit two’s complement value, it represents -161, since 0xF5F would be interpreted as 0x1000 subtracted from the value.

Uses and context: binary literals like this are common for expressing bit patterns, masks, or small constants in code. They appear in languages that support binary literals, such as Python, JavaScript (ES6 and later), and C++14 (and later), among others. Such literals are useful when precise bit-level control is required, for example in low-level programming, bitwise operations, or hardware interfacing.

See also: binary numeral system, hexadecimal notation, binary literals, bit mask, two’s complement.