1010001001001
1010001001001 is a binary numeral consisting of 13 bits. In binary form it is 0b1010001001001. Its value in decimal is 5193, and in hexadecimal it is 0x1449. The string contains five 1-bits, giving it a Hamming weight of 5. This pattern can be used as a bitmask representing up to 13 flags or features, depending on how the bits are interpreted in a given context.
In broader terms, such a binary sequence is common in computing and digital design as an example