id:A046455 - OEIS Search Results

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Concatenation of the 6 prime factors of composite a(n) is a palindrome.

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64, 729, 15625, 99375, 117649, 272685, 525819, 570999, 1040655, 1058145, 1113879, 1229865, 1608285, 1742279, 1771561, 2006697, 2040423, 2262771, 2371551, 3101259, 3398759, 3599775, 4835523, 4963299, 5039685, 5495301 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`E.g. 3398759 = 7 * 13 * 13 * 13 * 13 * 17 -> 71313131317 is palindromic.`
	CROSSREFS	`Cf. A046447.` `Sequence in context: A074154 A153160 A113851 this_sequence A092758 A030516 A056573` `Adjacent sequences: A046452 A046453 A046454 this_sequence A046456 A046457 A046458`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Jul 15 1998.`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research