Maggi Ajjayya, Kottur’s “Computer Man,” amazes social media with lightning-fast mental math. Despite only studying till 8th grade and surviving by begging, his calculation tricks have gone viral.

EXCLUSIVE: Based on the nonfiction book The Man Who Knew Infinity: A Life of the Genius Ramanujan by Robert Kanigel, the film charts the career of Srinivasa Ramanujan Iyengar, a self-taught ...