| 1 | This is the largest prime number that has been discovered (with the aid of a large computer) to date. | |
| 2 | That is impressive because those are three consecutive prime numbers. | |
| 3 | The next prize on offer is $150, 000, for a prime number with more than 100m digits. | |
| 4 | Professor Sujimoto' s fame had increased after he had discovered what was, at the time, the largest prime number ever found. | |
| 5 | In the same way, it is not known if there exists an infinity of prime numbers, the decimal representation of which does not use the digit 7. |