Talen 2117 till 2123 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 2117 | = | MMCXVII | = | 1000 + 1000 + 100 + 10 + 5 + 1 + 1 |
| 2118 | = | MMCXVIII | = | 1000 + 1000 + 100 + 10 + 5 + 1 + 1 + 1 |
| 2119 | = | MMCXIX | = | 1000 + 1000 + 100 + 10 + 10 − 1 |
| 2120 | = | MMCXX | = | 1000 + 1000 + 100 + 10 + 10 |
| 2121 | = | MMCXXI | = | 1000 + 1000 + 100 + 10 + 10 + 1 |
| 2122 | = | MMCXXII | = | 1000 + 1000 + 100 + 10 + 10 + 1 + 1 |
| 2123 | = | MMCXXIII | = | 1000 + 1000 + 100 + 10 + 10 + 1 + 1 + 1 |