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Positive Numbers Divisible by their Iterative Digit Sum Revisited

Okagbue, H. I. and Opanuga, A. A. and Oguntunde, P.E. and Eze, Grace (2017) Positive Numbers Divisible by their Iterative Digit Sum Revisited. The Pacific Journal of Science and Technology, 18 (1). p. 101.

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This paper is about the existence of numbers divisible by their iterative digit sum (NDIDS). Three conjectures were proposed, firstly, 9 multiply a NDIDS produces a multiple NDIDS. Secondly, there are no 15 or more consecutive NDIDS in the sequence of positive integers. Lastly, all Niven numbers are also NDIDS but the converse is not true. The detailed composition, properties, sequences and comparison with Niven numbers of NDIDS are discussed

Item Type: Article
Uncontrolled Keywords: iterative digit sum, digital root sequences, Nivens numbers, NDIDS)
Subjects: Q Science > QA Mathematics
Divisions: Faculty of Engineering, Science and Mathematics > School of Mathematics
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 16 Jun 2017 14:17
Last Modified: 16 Jun 2017 14:17

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