The sequence "111101" is a binary number, which is a system of representing values using only two symbols: 0 and 1. In this case, "111101" consists of six digits, where each digit represents a power of 2. When converted to decimal, "111101" equals 61, as it can be calculated by adding the values of the positions where there are 1s. Binary numbers like "111101" are fundamental in computer science and digital electronics, as they are used to represent data and instructions in computers. This system is essential for the functioning of various technologies, including computers, smartphones, and digital devices.