At the age of five, Hyderabad-based Neelakantha Bhanu Prakash met with an accident that rendered him bedridden for a year. It opened avenues for his tryst with arithmetic calculations and puzzles. What transpired eventually earned him titles like Fastest Human Calculator and The Number Prodigy over the years as he competed against records set by maths geniuses including Shakuntala Devi and Scott Flansburg.

In 2015, he added a randomly selected two-digit number to itself 41 times in 15 seconds, thereby outdoing the calculator's speed. He also multiplied three-digit numbers simultaneously without writing down the intermediate results in 40.43 seconds the same year. He created national and world records, participated in the Limca Book of Records (2013-15), the International Arithmetic Prodigy Championship (2013), the National Arithmetic Prodigy Champion (2011-12) and the Mental Calculation World Cup(2014 and 2016).