- Who
- Sempoa SIP Indonesia
- What
- 10,929 people
- Where
- Indonesia ()
- When
The largest online mental arithmetic championship consists of 10,929 people and was achieved by Sempoa SIP Indonesia (Indonesia) in Indonesia on 17 December 2023.
With a history of over 25 years, Sempoa SIP promotes innovative learning. This year they held an online mental arithmetic championship with over 11,000 registered participants in 12 categories to attain the Guinness World Record title of the largest online mental arithmetic championship.
