When I write 2K, Am I using a roman numeral?

We are absolutely sure that there isn’t any roman symbol bigger than 1000, which is presented by the letter M. That’s why the roman people put a slash above their numbers when they wanted to write a big number, which meant they were multiplying that number by 1000. For instance, the roman number `bar(VII)` stands for 7000.

Therefore we can definitely say that K is not a roman number. It is a letter that belongs to our alphabet and it is the abbreviation of Kilo, which in turn means to multiply a certain unit by 1000. So, a Kilogram means 1000 grams; a Kilometre means 1000 metres, and so on. From that moment on, in some countries it became usual to use K as the symbol of a multiplication by 1000.

By the year 2000, it was common to hear some computer experts referring themselves to an error that appeared in some computer programs due to the passage of the millennium. Such was the case of the bug Y2K (bug: error; Y: year; 2K: 2000). Now you know that if you find a house that is being sold by 130K, it means the price is 130,000 Euros.

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