Talen 2901 till 2907 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 2901 | = | MMCMI | = | 1000 + 1000 + 1000 − 100 + 1 |
| 2902 | = | MMCMII | = | 1000 + 1000 + 1000 − 100 + 1 + 1 |
| 2903 | = | MMCMIII | = | 1000 + 1000 + 1000 − 100 + 1 + 1 + 1 |
| 2904 | = | MMCMIV | = | 1000 + 1000 + 1000 − 100 + 5 − 1 |
| 2905 | = | MMCMV | = | 1000 + 1000 + 1000 − 100 + 5 |
| 2906 | = | MMCMVI | = | 1000 + 1000 + 1000 − 100 + 5 + 1 |
| 2907 | = | MMCMVII | = | 1000 + 1000 + 1000 − 100 + 5 + 1 + 1 |