1055

1055 is a natural number that follows 1054 and precedes 1056. It is an odd composite number with prime factorization 5 × 211, so its divisors are 1, 5, 211, and 1055. Because it is the product of two primes, 1055 is classified as a semiprime.

In different numeral systems, 1055 can be represented in several common forms. In Roman numerals it is written as MLV. In binary it equals 10000011111, reflecting its value as 2^10 plus 31.

As a calendar year, 1055 CE falls in the 11th century. A notable historical event associated with this year is the Seljuk capture of Baghdad, which established Seljuk dominance over the Abbasid Caliphate and marked a significant shift in Middle Eastern political power.

The number 1055 is also used in various practical contexts, such as labeling, cataloging, or indexing, where its semiprime structure can be relevant in theoretical discussions of number types or cryptographic considerations. In summary, 1055 functions both as a numeric value with specific factorization properties and as a marker of a historically consequential year.