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A260053 Composites whose prime factorization in base 9 is an anagram of the number in base 9. 11
72646, 74176, 75295, 78475, 134832, 189771, 255619, 422233, 440561, 586022, 638582, 644799, 655312, 659712, 701078, 855296, 882278, 919488, 1197500, 1213750, 1328102, 1329280, 1428352, 1451968, 1581088, 1585184, 1718857 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
72646 = 2 * 7 * 5189. In base 9, 120577 = 2 * 7 * 7105.
MATHEMATICA
Select[Range[10^6], !PrimeQ[#] && Sort@ IntegerDigits[#, 9] == Sort@ Flatten@ IntegerDigits[ Select[ Flatten@ FactorInteger@ #, #>1 &], 9] &] (* Giovanni Resta, Jul 14 2015 *)
CROSSREFS
Sequence in context: A114258 A238151 A234243 * A237555 A186047 A252333
KEYWORD
base,easy,nonn
AUTHOR
Stephen Tucker, Jul 14 2015
STATUS
approved

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Last modified June 25 15:24 EDT 2024. Contains 373705 sequences. (Running on oeis4.)