Wasteful, equidigital and frugal numbers: Difference between revisions
Wasteful, equidigital and frugal numbers (view source)
Revision as of 11:21, 17 July 2022
, 1 year agoAdded a clarifying sentence to the task description.
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By convention, the number '''1''' is considered to be an '''equidigital''' number in '''any''' base even though it has no prime factors.
For the avoidance of any doubt, the number '''0''' is not a positive integer (and arguably not a [[wp:Natural_number|''natural number'']] either) and so is excluded from all 3 categories.
An '''economical''' number is sometimes defined as being one for which l(n) '''>=''' D(n) though this usage won't be followed here.
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