1018

1018 is a natural number that comes after 1017 and before 1019. In mathematics, it is an even composite number with prime factorization 2 × 509. The divisors of 1018 are 1, 2, 509, and 1018; 509 is a prime number, making 1018 a semiprime (the product of two primes).

In different numeral systems, 1018 is represented as binary 1111111010, octal 1772, and hexadecimal 0x3FA. In Roman numerals, it can be written as MXVIII, which corresponds to 1000 + 18.

As a calendar year, 1018 CE falls in the early 11th century. It is associated with the broader context of the Byzantine–Bulgarian Wars, during which the Byzantine Empire under Basil II consolidated its influence in the Balkans and expanded control over Bulgarian territories. The year marks a period of significant political and military activity in that region, contributing to the long-term reshaping of power in southeastern Europe.

Beyond these contexts, 1018 does not have a single, universally prominent event tied to it that defines the year across all regions. Like many numbers, it appears in various cataloging, numbering, and modeling systems, and it serves as a reference point in mathematical properties and numeral representations.