Athmaraman, R. (2004). The Wonder World of Kaprekar Numbers. Chennai (India): The Association of Mathematics Teachers of India. Kaprekar, D. R. (1974). "The...
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In number theory, Kaprekar's routine is an iterative algorithm named after its inventor, Indian mathematician D. R. Kaprekar. Each iteration starts with...
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example, in base 10, 45 is a 2-Kaprekar number, because 45² = 2025, and 20 + 25 = 45. The numbers are named after D. R. Kaprekar. Let n {\displaystyle n} be...
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6174 (redirect from Kaprekar constant)
The number 6174 is known as Kaprekar's constant after the Indian mathematician D. R. Kaprekar. This number is renowned for the following rule: Take any...
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These numbers were first described in 1949 by the Indian mathematician D. R. Kaprekar. Let n {\displaystyle n} be a natural number. We define the b {\displaystyle...
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as n-harshad (or n-Niven) numbers. Harshad numbers were defined by D. R. Kaprekar, a mathematician from India. The word "harshad" comes from the Sanskrit...
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Gunjikar, K. R.; Kaprekar, D. R. (1939), "Theory of Demlo numbers" (PDF), Journal of the University of Bombay, VIII (3): 3–9 Kaprekar, D. R. (1938a), "On...
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Edwin Hubble Josephson constant – Brian David Josephson Kaprekar's constant – D. R. Kaprekar Kerr constant – John Kerr Khinchin's constant – Aleksandr...
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amateur mathematicians: List of recreational number theory topics Kulkarni, D. Enjoying Math: Learning Problem Solving With KenKen Puzzles Archived 2013-08-01...
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List of eponyms (A–K) (section D)
Hungarian dermatologist – Kaposi's sarcoma D. R. Kaprekar, Indian mathematician – Kaprekar constant, Kaprekar number Jacobus Kapteyn, Dutch astronomer –...
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Rochester who works in Number Theory D. R. Kaprekar – Mathematician who worked on Number Theory. He is known for Kaprekar constant Narendra Karmarkar – Mathematician...
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politician and sports administrator D. R. Kaprekar (1905–1986) — mathematician, discovered Kaprekar's constant and the Kaprekar number Sonali Kulkarni (born...
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Science, 1300-1800. Ákos Császár discovers the Császár polyhedron. D. R. Kaprekar discovers the convergence property of the number 6174. The use of lithium...
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the People's Republic of China. The Malta Labour Party is founded. D. R. Kaprekar discovers the convergence property of the number 6174. Slavery in Kuwait...
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these cubes as nasik as a respect to the great Indian Mathematician D R Kaprekar who hails from Deolali in Nasik District in Maharashtra, India. In 1905...
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Artillery (d. 1981) January 17 D. R. Kaprekar, Indian recreational mathematician (d. 1986) Saeb Salam, 4-time prime minister of Lebanon (d. 2000) Guillermo...
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Senior Wrangler R. P. Paranjpye Others Eknath Ghate Bapudeva Sastri Damodar Dharmananda Kosambi Chandrashekhar Khare D. R. Kaprekar Dinesh Thakur Kapil...
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of Jesuits. Born: D. R. Kaprekar, Indian recreational mathematician; in Dahanu, Bombay province, British India (d. 1986) "Kaprekar numbers", where the...
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giving b r + r = b 1 {\displaystyle b^{r+r}=b^{1}} . Equating the exponents on both sides, we have r + r = 1 {\displaystyle r+r=1} . Therefore, r = 1 2 {\displaystyle...
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connected components. country calling code for Uzbekistan 999 = 33 × 37, Kaprekar number, Harshad number In some parts of the world, such as the UK and Commonwealth...
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these numbers satisfy S d ( n , k ) = S ( n − d + 1 , k − d + 1 ) , n ≥ k ≥ d {\displaystyle S^{d}(n,k)=S(n-d+1,k-d+1),n\geq k\geq d} (hence the name "reduced")...
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Boston: Allyn and Bacon, LCCN 68-15225 Pettofrezzo, Anthony J.; Byrkit, Donald R. (1970), Elements of Number Theory, Englewood Cliffs: Prentice Hall, LCCN 77-81766...
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generalization: F n 2 − F n + r F n − r = ( − 1 ) n − r F r 2 {\displaystyle {F_{n}}^{2}-F_{n+r}F_{n-r}=(-1)^{n-r}{F_{r}}^{2}} F m F n + 1 − F m + 1 F...
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numbers q and r such that a = b q + r and r < b . {\displaystyle a=bq+r{\text{ and }}r<b.} The number q is called the quotient and r is called the remainder...
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k > 1 we have d ( n ) n ε ≥ d ( k ) k ε {\displaystyle {\frac {d(n)}{n^{\varepsilon }}}\geq {\frac {d(k)}{k^{\varepsilon }}}} where d(n), the divisor...
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the original (PDF) on 2016-05-09, retrieved 2009-03-02. Bloch, R. M.; Campbell, R. V. D.; Ellis, M. (1948), "The Logical Design of the Raytheon Computer"...
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called "indefinite hyperbolic numerals". Hardy–Ramanujan number, 1729 Kaprekar's constant, 6174 Eddington number, ~1080 Googol, 10100 Shannon number Centillion...
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+(a+dn-d)^{3}} is given by F ( d , a , n ) = ( n / 4 ) ( 2 a − d + d n ) ( 2 a 2 − 2 a d + 2 a d n − d 2 n + d 2 n 2 ) {\displaystyle F(d,a,n)=(n/4)(2a-d...
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root Sum-product Coding-related Meertens Other Dudeney Factorion Kaprekar Kaprekar's constant Keith Lychrel Narcissistic Perfect digit-to-digit invariant...
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1 − x ) x k d x = ( − 1 ) z Γ ( z + 1 ) ( k − 1 ) ! ∑ r = 1 k − 1 s ( k − 1 , r ) ∑ m = 0 r ( r m ) ( k − 2 ) r − m ζ ( z + 1 − m ) , ℜ ( z ) > k − 1...
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