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A046449
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Smallest composite number with n distinct prime factors with property that the concatenation of its distinct prime factors is a palindrome.
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6
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4, 39, 429, 5565, 94605, 1040655, 2332655745, 178516966485, 4105890229155, 867388559982945, 37297708079266635, 1529206031249932035
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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a(5)=94605 has 5 distinct factors 3 * 5 * 7 * 17 * 53 and 3571753 is palindromic.
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CROSSREFS
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KEYWORD
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nonn,hard,nice,base
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AUTHOR
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EXTENSIONS
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More terms from Arlin Anderson (starship1(AT)gmail.com), Mar 11 2000
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STATUS
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approved
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