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A137085 Numbers k such that k and k^2 use only the digits 2, 3, 5 and 8. 0

%I #12 May 01 2024 11:29:16

%S 5,235,2885,2885885

%N Numbers k such that k and k^2 use only the digits 2, 3, 5 and 8.

%C Generated with DrScheme.

%C From _Pontus von Brömssen_, May 01 2024: (Start)

%C a(5) > 2*10^45 (if it exists).

%C If k = x*10^m is a term where 1 < x < 10, then 2.285225552388258858552222225235528528523328825 < x < 5.325258888855882552883388888388553252535328324.

%C (End)

%H J. Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived]

%e 2885885^2 = 8328332233225.

%K base,nonn,more

%O 1,1

%A Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

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Last modified July 21 11:45 EDT 2024. Contains 374472 sequences. (Running on oeis4.)