1000111111

1000111111 is a binary numeral consisting of ten digits. It has seven ones and three zeros; the leftmost bit is 1, followed by three zeros, and then six consecutive ones. As a binary value, it equals 575 in decimal and 0x23F in hexadecimal. In binary grouping, it can be written as 1000 111111, highlighting that the lower six bits are all set to 1.

In digital logic, this pattern represents a 10-bit quantity with a mask in the least significant bits. The string may be used in education or as a test vector, and can serve as a compact example of a 10-bit value in documentation. Because it exceeds standard ASCII ranges, it is not used to encode printable characters by itself. In computing contexts that employ fixed-width bit fields, 1000111111 corresponds to decimal 575, hex 23F.