Talen 2129 till 2135 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 2129 | = | MMCXXIX | = | 1000 + 1000 + 100 + 10 + 10 + 10 − 1 |
| 2130 | = | MMCXXX | = | 1000 + 1000 + 100 + 10 + 10 + 10 |
| 2131 | = | MMCXXXI | = | 1000 + 1000 + 100 + 10 + 10 + 10 + 1 |
| 2132 | = | MMCXXXII | = | 1000 + 1000 + 100 + 10 + 10 + 10 + 1 + 1 |
| 2133 | = | MMCXXXIII | = | 1000 + 1000 + 100 + 10 + 10 + 10 + 1 + 1 + 1 |
| 2134 | = | MMCXXXIV | = | 1000 + 1000 + 100 + 10 + 10 + 10 + 5 − 1 |
| 2135 | = | MMCXXXV | = | 1000 + 1000 + 100 + 10 + 10 + 10 + 5 |