1329

1329 is an integer that can be factored as 3 × 443; 443 is prime, so 1329 is a semiprime. It is odd, and the sum of its digits is 15, which indicates it is divisible by 3. In various numeral systems, 1329 appears as follows: in Roman numerals it is written as MCCCXXIX, in binary as 10100110001, and in hexadecimal as 0x531.

As a calendar year, 1329 CE falls in the 14th century. It occurred during the period when the Papacy was based in Avignon, under Pope John XXII, who reigned from 1316 to 1334. The era was characterized by complex relations between secular rulers and the church, as well as ongoing political and social changes across Europe. While specific well-known events of 1329 vary by region, the year sits within a broader medieval context marked by the consolidation of medieval statecraft, clerical authorities, and local institutional developments.

In abstract terms, 1329 is used in mathematical discussions as an example of a semiprime and to illustrate representations of a given integer across different bases and numeral systems. The number’s properties—such as its factorization, parity, and digit sum—are typical topics in elementary number theory, where 1329 serves as a concrete illustration of how an integer can be analyzed from multiple perspectives.