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http://dx.doi.org/10.7236/JIIBC.2014.14.5.87

Generalized Divisibility Rule of Natural Number m  

Lee, Sang-Un (Dept. of Multimedia Eng., Gangneung-Wonju National University)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.14, no.5, 2014 , pp. 87-93 More about this Journal
Abstract
For n/m=qm+r, there is no simple divisibility rule for simple m=7 such that is the n multiply by m? This problem can be more complex for two or more digits of m. The Dunkels method has been known for generalized divisibility test method, but this method can not compute very large digits number that can not processed by computer. This paper suggests simple and exact divisibility method for m completely irrelevant n and m of digits. The proposed method sets $r_1=n_1n_2{\cdots}n_l(mod m)$ for $n=n_1n_2n_3{\cdots}n_k$, $m=m_1m_2{\cdots}m_l$. Then this method computes $r_i=r_{i-1}{\times}10+n_i(mod m)$, $i=2,3,{\cdots}k-l+1$ and reduces the digits of n one-by-one. The proposed method can be get the quotient and remainder with easy, fast and correct for various n,m experimental data.
Keywords
Divisibility test; Modular; Digits reduction; Most left digit; Most right digit;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 M. B. Choi and S. U. Lee, "The $\kappa$ Fermat's Integer Factorization Algorithm," Journal of the Institute of Internet, Broadcasting and Communication, Vol. 11, No. 4, pp. 157-164, Aug. 2011.
2 S. U. Lee and M. B. Choi, "The Integer Factorization Method Based on Congruence of Squares," Journal of the Institute of Internet, Broadcasting and Communication, Vol. 12, No. 5, pp. 185-189, Oct. 2012.   과학기술학회마을   DOI
3 S. U. Lee and M. B. Choi, "Integer Factorization for Decryption," Journal of the Institute of Internet, Broadcasting and Communication, Vol. 13, No. 6, pp. 221-228, Dec. 2013.   과학기술학회마을   DOI
4 B. S. Park, "Multiple Test for 7 - Can be Divided?," Mathematics Walk, Mathematics Standard educational institute, Nov. 2009.
5 A. Dunkels, "Comments on Note 82.53-a Generalized Test for Divisibility," Mathematical Gazette, Vol. 84, p. 79-81, Mar. 2000.   DOI
6 Wikipedia, "Divisibility Rule," Wikipedia Foundation, 2013.
7 M. Ahuja and J. Bruening, "A Survey of Divisibility Test with a Historical Perspective," Bulletin of the Malaysian Mathematical Society, Vol. 22, pp. 33-43, 1999.
8 L. E. Marin, "Why is There No Easy Divisibility Rule for 7?," Jansal Mathematics, Mar 2010.
9 H. Feiner, "Divisibility Test for 7," The Mathematics Teacher, Vol. 58, pp. 311-312, Apr 1965.
10 E. R. Matthews, "A Simple 7 Divisibility Rule," The Mathematics Teacher, Vol. 62, No. 6, pp. 461-464, Oct 1969.
11 E. A. Maxwell, "Division by 7 or 13," Mathematical Gazette, Vol. 49, p. 84, Feb 1965.   DOI