1111111011001

1111111011001 is a binary numeral composed of 13 digits. When interpreted as an unsigned binary integer, it equals 8153 in decimal and 0x1FD9 in hexadecimal. The most significant bit is 2^12 and the least significant bit is 2^0; the bits set to 1 occur at positions 12, 11, 10, 9, 8, 7, 6, 4, 3 and 0, giving a bit count (population count) of 10. The number is odd, since its least significant bit is 1. It is not a power of two and does not correspond to a standard ASCII or Unicode code point by itself, as those encodings use fixed widths of 7- or 8-bit units or broader schemes.

In hexadecimal form, padded as a 16-bit value, it is 0x01FD9. In many practical contexts, 13-bit widths are uncommon in contemporary computing, where data words are typically 8, 16, 32, or 64 bits; nevertheless, 13-bit values can arise in specialized hardware, historical systems, or compact encodings where non-standard widths are used for efficiency or legacy reasons.

See also: binary numeral system, hexadecimal notation, decimal representation, bitwise operations, popcount.