111110111

111110111 is a binary numeral consisting of nine digits. In base-2 it represents the decimal number 503. It also corresponds to hexadecimal 0x1F7 and octal 767. The grouping of digits as 111 110 111 maps to the octal digits 7, 6, 7.

As a nine-bit value, it sits near the upper end of possible values for that width; the maximum for nine bits is 111111111 (511). The number is odd and is a prime number.

In computing, binary patterns like 111110111 are used as simple examples of bit patterns, masks, flags, or identifiers. There is no widely known mathematical or historical significance attached specifically to this sequence, beyond its role as an illustrative near-maximum nine-bit numeral and a case study in binary-to-decimal and base conversions.