an interesting problem

01092018, 03:32 AM
Post: #1




an interesting problem
Find a number that is all three: a perfect number, a happy number, and a Keith number.


01092018, 06:23 AM
Post: #2




RE: an interesting problem
My house number qualifies as the required form
Is there a second such number? Pauli Twice the alphabet plus four all divided by two..... 

01092018, 11:01 AM
Post: #3




RE: an interesting problem
(01092018 06:23 AM)Paul Dale Wrote: My house number qualifies as the required form I knew you would be the one to find it. Congratulations. As to a second such number, I don't know, that's an interesting question. I rather doubt it. 

01092018, 02:31 PM
Post: #4




RE: an interesting problem
\[\sum _{ 1 }^{ 7 }{ x } \]
X<> c Joe 

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