Eleventh root of maximum numbers calculated manually by a child in one minute
Image of S. poojitha Sai, Eleventh root of maximum numbers calculated manually by a child in one minute.

Eleventh root of maximum numbers calculated manually by a child in one minute

The record for manually calculating the eleventh root of maximum numbers in one minute was set by S. Poojitha Sai (born on May 21, 2013) of Chittoor, Andhra Pradesh. She manually calculated the eleventh root of 43 random numbers (of 8 to 22 digits) in one minute and wrote the answers on a sheet of paper (under the guidance of VMAT Academy, Bengaluru), at the age of 12 years, 9 months and 20 days, as confirmed on March 13, 2026.