A number of numeral systems are developed for large numbers that cannot be shown with I, V, X, L, C, D and M. Mixed Roman and Arabic numerals are sometimes used in numeric representations of dates (especially in formal letters and official documents, but also on tombstones). The month is written in Roman numerals, while the day is in Arabic numerals: "4. VI.1789" and " VI.4.1789" both refer unambiguously to 4 June 1789. Each fraction from 1⁄ 12 to 12⁄ 12 had a name in Roman times; these corresponded to the names of the related coins:

In photography, Roman numerals (with zero) are used to denote varying levels of brightness when using the Zone System. Note - The value of these symbols is multiplied by 1000 by adding a bar above them (e.g., V̅ = 5000).While it may have been less common to deal with numbers of 4,000 and above, or have the need to write it down, it still seems unlikely that the Romans would not deal with some things over this amount.

If so, rather than Julius Caesar pondering to himself before a battle that he had an army of 24,000 men, he may have been more likely to just think that he had 6 legions. Like so much of early Roman culture, a lot was based on earlier civilizations that existed in the Mediterranean region, which at that time were superior to the fledging Roman Empire.In theology and biblical scholarship, the Septuagint is often referred to as LXX, as this translation of the Old Testament into Greek is named for the legendary number of its translators ( septuaginta being Latin for "seventy").

Muslim mathematicians and astronomers played a key role in the development and spread of the Hindu-Arabic system, which they had learned from the Indian mathematicians who had developed it.

The number 1997

One possible reason for this is simply because of their age. Quite often people think elements from the past are more stylish than modern taste, and the use of Roman numerals can often give the appearance of elegance. a b Gachard, M. (1862). "II. Analectes historiques, neuvième série (n os CCLXI-CCLXXXIV)". Bulletin de la Commission royale d'Historie. 31 (3): 345–554. doi: 10.3406/bcrh.1862.3033. Gaius Plinius Secundus. Naturalis Historia, Book III (in Latin) – via Wikisource. Book III: " Saturni vocatur, Caesaream Mauretaniae urbem CCLXXXXVII p[assum]. traiectus. reliqua in ora flumen Tader ... ortus in Cantabris haut procul oppido Iuliobrica, per CCCCL p. fluens ..." Chrisomalis, Stephen (2010). Numerical Notation: A Comparative History. Cambridge University Press. pp.402–403. ISBN 978-0-521-87818-0. The notation for 1000 was a circled or boxed X: Ⓧ, ⊗, ⊕, and by Augustinian times was partially identified with the Greek letter Φ phi. Over time, the symbol changed to Ψ and ↀ. The latter symbol further evolved into ∞, then ⋈, and eventually changed to M under the influence of the Latin word mille "thousand". [48]