Talen 2615 till 2621 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 2615 | = | MMDCXV | = | 1000 + 1000 + 500 + 100 + 10 + 5 |
| 2616 | = | MMDCXVI | = | 1000 + 1000 + 500 + 100 + 10 + 5 + 1 |
| 2617 | = | MMDCXVII | = | 1000 + 1000 + 500 + 100 + 10 + 5 + 1 + 1 |
| 2618 | = | MMDCXVIII | = | 1000 + 1000 + 500 + 100 + 10 + 5 + 1 + 1 + 1 |
| 2619 | = | MMDCXIX | = | 1000 + 1000 + 500 + 100 + 10 + 10 − 1 |
| 2620 | = | MMDCXX | = | 1000 + 1000 + 500 + 100 + 10 + 10 |
| 2621 | = | MMDCXXI | = | 1000 + 1000 + 500 + 100 + 10 + 10 + 1 |