Talen 2511 till 2517 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 2511 | = | MMDXI | = | 1000 + 1000 + 500 + 10 + 1 |
| 2512 | = | MMDXII | = | 1000 + 1000 + 500 + 10 + 1 + 1 |
| 2513 | = | MMDXIII | = | 1000 + 1000 + 500 + 10 + 1 + 1 + 1 |
| 2514 | = | MMDXIV | = | 1000 + 1000 + 500 + 10 + 5 − 1 |
| 2515 | = | MMDXV | = | 1000 + 1000 + 500 + 10 + 5 |
| 2516 | = | MMDXVI | = | 1000 + 1000 + 500 + 10 + 5 + 1 |
| 2517 | = | MMDXVII | = | 1000 + 1000 + 500 + 10 + 5 + 1 + 1 |