MATHEMATICIAN

D. R. Kaprekar

1905 - 1986

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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 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. Read more on Wikipedia

His biography is available in different languages on Wikipedia. D. R. Kaprekar is the 561st most popular mathematician (down from 541st in 2019), the 451st most popular biography from India (down from 436th in 2019) and the 8th most popular Indian Mathematician.

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Among MATHEMATICIANS

Among mathematicians, D. R. Kaprekar ranks 561 out of 1,004. Before him are Abraham Gotthelf Kästner, Johann Samuel König, Athir al-Din al-Abhari, Samuel Eilenberg, Jean-Étienne Montucla, and Pál Turán. After him are Solomon Lefschetz, Isadore Singer, Louis J. Mordell, Giovanni Battista Zupi, Dénes Kőnig, and Mikio Sato.

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Contemporaries

Among people born in 1905, D. R. Kaprekar ranks 182. Before him are Colin Clark, Giuseppe Cavanna, Alexandre Villaplane, Miliza Korjus, Rodolfo Orlandini, and Paul Grimault. After him are Witness Lee, Mohammad Hidayatullah, Raúl Leoni, Juan Hilario Marrero, André Cluytens, and Tamar Abakelia. Among people deceased in 1986, D. R. Kaprekar ranks 129. Before him are Fumiko Enchi, Adolfo Baloncieri, Harold Arlen, Howard Da Silva, Ernst Lehner, and Géza von Radványi. After him are Valerian Zorin, Vasily Ignatenko, Josef Kammhuber, Lili Kraus, Teddy Wilson, and Helen B. Taussig.

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In India

Among people born in India, D. R. Kaprekar ranks 451 out of 1,861. Before him are Keshub Chandra Sen (1838), Satish Kumar (1936), Anil Kapoor (1956), Ramananda (1400), Gangubai Hangal (1913), and Oswald Gracias (1944). After him are Bhupen Hazarika (1926), Telesphore Toppo (1939), Bismillah Khan (1916), Guru Har Rai (1630), Mohammad Hidayatullah (1905), and Bhavabhuti (null).

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Among MATHEMATICIANS In India

Among mathematicians born in India, D. R. Kaprekar ranks 8. Before him are Brahmagupta (598), Bhāskara II (1114), Augustus De Morgan (1806), Madhava of Sangamagrama (1350), S. R. Ranganathan (1892), and Bhāskara I (600). After him are Jai Singh II (1688), Sulochana Gadgil (1944), Nilakantha Somayaji (1444), S. R. Srinivasa Varadhan (1940), Harish-Chandra (1923), and Kātyāyana (-200).

Indian born Mathematicians

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