2278

2278 is a natural number that follows 2277 and precedes 2279. It is even and composite, with prime factorization 2 × 17 × 67. In Roman numerals, 2278 is written as MMCCLXXVIII.

As a calendar year, 2278 would be a future year in the Gregorian calendar, placing it in the 23rd century CE. In historical projections and science fiction, the number is sometimes used to set events in a distant future or to mark a milestone year in speculative timelines.

In astronomy, 2278 is used as a designation for a minor planet (asteroid) once its orbit has been confirmed. The numeric designation indicates its place in the sequence of officially numbered minor planets assigned by the Minor Planet Center. The specific object bearing the number 2278 may have an official name or remain unnamed depending on subsequent naming decisions.

Beyond mathematics and astronomy, 2278 appears as a label in various cataloging systems, including product models, part numbers, and sometimes postal or administrative codes. As with many four-digit identifiers, its meaning is context-dependent and determined by the domain in which it is used.