How to write 103 in Roman numerals
Roman numerals are built place by place, from the largest value to the smallest. For 103 the places are 100 (hundreds), 3 (ones).
- Write 100 as
C. - Write 3 as
III.
Joined together, C + III gives CIII.
103 digit by digit
| Place | Value | Numeral | Rule used |
|---|---|---|---|
| hundreds | 100 | C | one symbol |
| ones | 3 | III | the symbol repeated three times (the limit) |
Check CIII by reading it back
Reading CIII from left to right and adding the pieces: C = 100, III = 3. Together that is 100 + 3 = 103, so CIII and 103 match.
Mistakes to avoid with CIII
- Never repeat a symbol more than three times in a row. When a fourth would be needed, the subtractive form takes over.
- Only I, X and C may be placed before a larger symbol to subtract, so CIII never contains forms such as VX or LC.
- Read CIII as one number, not letter by letter: add the values left to right, except where a smaller symbol sits before a larger one.
Facts about the number 103
- 103 is an odd number and a prime number.
- In binary 103 is
1100111and in hexadecimal it is67. - Written out, 103 is "one hundred three".
- The digits of 103 add up to 4.
Where you will see 103 in Roman numerals
The front matter of an exceptionally long thesis might reach page 103, marked CIII. Universities require Roman numerals for preliminary pages so that the main body of the document can begin cleanly at Arabic page one.
Numbers near 103
FAQ
What is 103 in Roman numerals?
103 is written CIII in Roman numerals. It is built from C (100), III (3).
How do you write 103 in lowercase Roman numerals?
Lowercase Roman numerals use the same rules, so 103 is ciii. Lowercase is common for page numbers in a book's preface and for outline levels.
How do I convert any number to Roman numerals?
Split the number into thousands, hundreds, tens and ones, write each part with the symbols I, V, X, L, C, D and M, then join them from largest to smallest. Or paste it into the Roman numeral converter, which also converts back.
More roman numerals
- 102 (CII): previous page
- 104 (CIV): next page
- Roman numerals chart: the full list