111011111

111011111 is a nine-digit sequence composed of binary digits. As a binary numeral, it consists of eight ones and a single zero, with the zero in the fourth position from the left (the bits are 1 1 1 0 1 1 1 1 1).

Interpreting this sequence as a binary number yields the decimal value 479. The calculation is 2^8 + 2^7 + 2^6 + 0·2^5 + 2^4 + 2^3 + 2^2 + 2^1 + 2^0 = 479.

479 is a prime number, meaning it has no positive divisors other than 1 and itself. It is not divisible by the primes up to its square root (2, 3, 5, 7, 11, 13, 17, and 19).

In digital and mathematical contexts, sequences like 111011111 are often used as simple bit patterns for testing, encoding demonstrations, or illustrating properties of binary representations. The pattern, featuring a single zero amid ones, can also serve as a compact example when discussing bit distributions, binary arithmetic, or basic error-detection concepts.