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A032749 Super-9 Numbers (9*n^9 contains substring '999999999' in its decimal expansion). 2

%I #12 Oct 06 2019 18:32:57

%S 17546133,32613656,93568867,107225764,109255734,113315082,121251742,

%T 175461330,180917907,182557181,190215626,227366552,267791979,

%U 297981691,298002027,301321202,321541434,326136560,326687646,329178946,351038353

%N Super-9 Numbers (9*n^9 contains substring '999999999' in its decimal expansion).

%C The smallest super-9 prime is 182557181.

%D C. A. Pickover, "Keys to Infinity", New York: Wiley, p. 7, 1995.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Super-dNumber.html">Super-d Number.</a>

%Y Cf. A014569.

%K nonn,base

%O 0,1

%A _Patrick De Geest_, May 15 1998; extended Feb 22 2004

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)