Anonymous user
Talk:Numbers with prime digits whose sum is 13: Difference between revisions
Talk:Numbers with prime digits whose sum is 13 (view source)
Revision as of 10:31, 29 September 2020
, 3 years agono edit summary
Thundergnat (talk | contribs) (→These are NOT unlucky numbers: new section) |
mNo edit summary |
||
Line 2:
: "and sum of them is 13. " --[[User:Horst.h|Horst.h]]
:: ??? Is the sum of the digits of <code>222,223</code> not 13? --[[User:Thundergnat|Thundergnat]] ([[User talk:Thundergnat|talk]]) 10:12, 29 September 2020 (UTC)
::: Uups, an unmentioned limit in the program "limit = 10000" that doesn't make sense since 322,222 will be the highest number to test.See also [[Permutations_with_some_identical_elements]].<BR>Maybe a new name for the draft before deletion ;-) --[[User:Horst.h|Horst.h]]
== These are NOT unlucky numbers ==
Unlucky number have a long established definition and this is not it. (See [[oeis:A050505|OEIS A050505]].) These are "Integers in base 10 whose digits are all prime and sum to 13". or perhaps "Unlucky digit sums" My question is: what is the significance of the digits being prime? What property makes these numbers "unlucky"? If it is the summing to 13 why wouldn't 168 be "unlucky"? --[[User:Thundergnat|Thundergnat]] ([[User talk:Thundergnat|talk]]) 10:20, 29 September 2020 (UTC)
| |||