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A046456
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Concatenation of the 7 prime factors of composite a(n) is a palindrome.
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0
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128, 2187, 78125, 496875, 823543, 1908795, 3680733, 6280989, 11447205, 11639595, 14480427, 15839397, 15988245, 17998875, 19165069, 19487171, 22073667, 22444653, 27340845, 30830163, 35277795, 38975433, 44183867
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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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17998875 = 3 * 3 * 3 * 5 * 5 * 5 * 5333 -> 3335555333 is palindromic.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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