| Description: | Memorise digits spoken at 1 digit per second. |
| Memorisation: | Up to 450 digits heard |
| Recall: | 20 minutes |
Rank | Competitor | Score | Championship |
| 69 | Kieu Cao Linh | 75 digits | WMC 2021 |
| 260 | Nguyen Tan Hung | 16 digits | WMC 2021 |
| 346 | Thai Trung Kien | 8 digits | WMC 2021 |
| 346 | Truong Vu Luan | 8 digits | WMC 2021 |