Number
101 in Roman numerals
101 is written CI
Type any other number or numeral below to convert it.
Above 3,999? Type the barred part in brackets, e.g. (IV)CC = 4,200.
How CI is built
Roman numerals are written one decimal place at a time, largest first.
- Chundreds · 1C is 100.
- Iones · 1I is 1.
100 + 1 = 101
No subtraction is needed here: every letter is the same size or smaller than the one before it, so you simply add them up.
Mistakes to avoid
- There's no letter for zero. The zero is simply left out, which is why 101 has 2 parts, not 3.
About the number 101
- 101 is a prime number: only 1 and 101 divide it exactly.
- CI has 2 letters. 969 of the numbers up to 1,000 have longer numerals.
Counting from 101 to 110
| Number | Roman numeral |
|---|---|
| 101 | CI |
| 102 | CII |
| 103 | CIII |
| 104 | CIV |
| 105 | CV |
| 106 | CVI |
| 107 | CVII |
| 108 | CVIII |
| 109 | CIX |
| 110 | CX |