What is the Roman numeral for five hundred?
Roman numerals
The hundredth or was marked with a box or circle. Thus 500 was like a superimposed on a or — that is, like a with a cross bar,— becoming or by the time of Augustus, under the graphic influence of the letter . It was later identified "as" the letter D; an alternative symbol for "thousand" was a bracketed (or ), and half of a thousand or "five hundred" is the right half of the symbol, (or ), and this may have been converted into . This at least was the etymology given to it later on.
Minuscule 529
Minuscule 529 (in the Gregory-Aland numbering), ε 149 (in Soden's numbering), is a Greek minuscule manuscript of the New Testament, on a parchment. Palaeographically it has been assigned to the 12th century. 
Scrivener labeled it by number 484. It was adapted for liturgical use.