2103

2103 is a natural number that follows 2102 and precedes 2104. In decimal notation, it is odd and composite.

In mathematics, 2103 factors as 3 × 701, where 701 is a prime number. Its divisors are 1, 3, 701, and 2103. The sum of all positive divisors is 2808, so the sum of proper divisors is 705, making 2103 a deficient number. In other bases, it represents as 100000110111 in binary and 0x0837 in hexadecimal. In Roman numerals, 2103 is written as MMCIII.

As a calendar year, 2103 CE would be a non-leap year in the Gregorian calendar, since it is not divisible by 4. It would occur in the 22nd century of the Common Era.

Beyond pure mathematics and the calendar, 2103 commonly appears as a numeric designation in catalogs, part numbers, and model identifiers. As with many integers, it is sometimes used in fiction to designate a future year or a symbolic code, but there is no single widely recognized event or entity inherently associated with the number 2103.