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A260055
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Composites whose prime factorization in base 12 is an anagram of the number in base 12.
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11
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169, 185, 219, 2165, 2402, 3981, 4205, 10031, 21349, 21907, 22049, 24199, 26919, 27746, 28802, 29767, 29919, 31107, 46749, 71375, 251521, 252257, 252361, 259565, 275237, 280587, 292159, 293011, 301163, 303161, 305765
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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EXAMPLE
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169 = 13^2. In base 12, 121 = 11^2.
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PROG
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(PARI) isok(n, b) = {f = factor(n); v = []; for (i=1, #f~, v = concat(v, digits(f[i, 1], b)); if (f[i, 2]!= 1, v = concat(v, digits(f[i, 2], b))); ); vecsort(v) == vecsort(digits(n, b)); }
lista(nn, b=12) = forcomposite(n=1, nn, if (isok(n, b), print1(n, ", "))); \\ Michel Marcus, Jul 14 2015
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CROSSREFS
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KEYWORD
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base,easy,nonn
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AUTHOR
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STATUS
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approved
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