Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

In the modern usage of Roman numerals, how would a number such as 1,001,000 be converted to Roman numerals? Would it be $\overline{\mathrm M}$${\mathrm M}$ or $\overline{\mathrm {MI}}$?

Is there a set of rules governing when to use ${\mathrm M}$ and when to use $\overline{\mathrm I}$? These are the only two symbols in Roman numerals with the same value.

share|improve this question

1 Answer 1

up vote 0 down vote accepted

This page claims that $\overline{\mathrm I}$ was not used because of M. But the historical examples given by this page suggests that something like $\overline{\mathrm{MI}}$ might have been a fine way to write it. Of note is that this Dr. Math page suggests the vertical bar/parentheses method may have preceded M and the overline, but I don't know if $\left||\mathrm I|\mathrm I\right|$ was ever an option.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.