Continuing gives the sequence 23, 28, 38, 49, 62, 70, . But 20 is a self number, since it cannot be generated from any other integer. Kaprekar number. Of course from this observation we see that there are infinitely many Kaprekar numbers (certainly 9, 99, 999, 9999, . He began his tertiary studies at Fergusson College in Pune in 1923. Authority control WorldCat Identities VIAF: 43043421 GND: 133997138 . These were later also called Niven numbers after a 1977 lecture on these by the Canadian mathematician Ivan M.
The Wonder World of Kaprekar Numbers. It was shown in 2000 that Kaprekar numbers are in one-one correspondence with the unitary divisors of 10n - 1 (x is a unitary divisor of z if z = xy where x and y are coprime). ombres Forum Index -> Partie publique -> Le bar All times are GMT + 1 Hour Page 1 of 1 . He is also known as "Ganitanand" (). are all Harshad numbers. In fact the Kaprekar process will yield either 0 or 6174. We explained above that he retired at the age of 58 in 1962. Sometimes these are also designated Colombian numbers after a later designation.
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