Indian number theorists | Recreational mathematicians | Magic squares

D. R. Kaprekar

Dattatreya Ramchandra Kaprekar (Marathi: दत्तात्रेय रामचंद्र कापरेकर; 17 January 1905 – 1986) was an Indian recreational mathematician who described several classes of natural numbers including the Kaprekar, harshad and self numbers and discovered the Kaprekar's constant, named after him. Despite having no formal postgraduate training and working as a schoolteacher, he published extensively and became well known in recreational mathematics circles. (Wikipedia).

D. R. Kaprekar
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Related pages

Repunit | Kaprekar's routine | Numberphile | Martin Gardner | Self number | Ivan M. Niven | Recreational mathematics | Kaprekar number | Harshad number