929

929 is a natural number that follows 928 and precedes 930. In mathematics, it is an odd prime number and also a palindromic prime, meaning its decimal representation reads the same forward and backward. Its primality can be verified by the fact that it is not divisible by any prime number less than or equal to 30 (2, 3, 5, 7, 11, 13, 17, 19, 23, or 29).

In other bases and numeral systems, 929 has these representations: in binary it is 1110100001, in octal it is 1641, and in hexadecimal it is 3A1. In Roman numerals, 929 is written as CMXXIX (900 is CM, 20 is XX, and 9 is IX).

Historically, the year 929 CE is notable for events linked to the Islamic rulers of the Iberian Peninsula. In that year Abd al-Rahman III proclaimed himself Caliph of Córdoba, establishing the Umayyad Caliphate of Córdoba and elevating Córdoba to a capital of a centralized, expansive realm in Al-Andalus. This marked a significant point in the political and cultural development of medieval Spain and the broader Mediterranean region.