2891

2891 is the natural number that follows 2890 and precedes 2892. In mathematics it is an odd composite number with prime factorization 7^2 × 59, making it divisible by 7, 49, 59, and 7×59. The presence of a repeated prime factor means that 2891 is a squareful number, since it is divisible by the square of a prime.

In common representations, 2891 appears as 101101001011 in binary and as 0xB4B in hexadecimal. In Roman numerals it is written as MMDCCCXCI. These forms reflect standard conversions between numeral systems rather than any special properties of the number itself.

The decimal value 2891 does not denote a widely recognized constant, year, or code in a specific historical or cultural context. As a generic integer, it is used in arithmetic, number theory examples, and as an ordinary identifier in various classification schemes, similar to other natural numbers.