7911

7911 is a natural number that follows 7910 and precedes 7912. In mathematics, it is an odd composite integer with prime factorization 3^3 × 293. Its digit sum is 18, making it divisible by 9 and 27, and its binary representation is 1111011100111, while its hexadecimal representation is 0x1EE7. These properties identify 7911 as neither prime nor a perfect power.

In electronics, 7911 is commonly encountered as part of the 79xx family of voltage regulators. The designation is associated with a fixed negative regulator that provides approximately -11 volts when connected in the usual regulator configuration. Variants such as LM7911 are used in power supply designs to create symmetrical or dual supply rails in conjunction with corresponding positive regulators (for example, a +11 V regulator) in various consumer and industrial circuits. Typical specifications include a maximum current around 1 ampere and a dropout voltage that depends on the device and package.

Beyond mathematics and electronics, 7911 may appear as a model, catalog, or part number in different industries. As with many numeric identifiers, its meaning is context-dependent, and there is no single universal interpretation of 7911 outside of its mathematical value and its use as a component designation in voltage-regulator families.

In summary, 7911 is primarily recognized in two ways: as a composite number with specific factorization and base representations, and as a model identifier in the 79xx series of negative voltage regulators. The number itself does not imply a broader, universal significance beyond these contexts.