Square roots of maximum four-digit numbers mentally calculated by a child

Hrishabh Bhagatram Somani (born on April 10, 2014) of Gujarat, India, set a record for mentally calculating the square roots of maximum four-digit numbers. He mentally calculated the square roots of 102 four-digit numbers in 2 minutes and 33 seconds by viewing the numbers on a laptop screen, at the age of 12 years and 3 days, as confirmed on April 16, 2026.