id:A046453 - OEIS Search Results

Search: id:A046453

Displaying 1-1 of 1 results found.

page 1

Composite numbers n such that concatenation of the 4 prime factors of n is a palindrome.

+0
1

16, 81, 625, 2401, 3975, 4719, 5565, 6591, 8745, 10731, 14399, 14641, 16863, 20111, 34391, 36501, 39963, 41019, 46179, 47229, 48231, 60813, 61761, 62991, 69027, 109179, 113631, 116475, 143991, 158985, 159777, 162409, 164145, 167571, 183159 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`E.g. 164145 = 3 * 5 * 31 * 353 -> 3531353 is palindromic.`
	CROSSREFS	`Cf. A046447.` `Sequence in context: A108941 A153157 A113849 this_sequence A030514 A056571 A053909` `Adjacent sequences: A046450 A046451 A046452 this_sequence A046454 A046455 A046456`
	KEYWORD	`nonn,base`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Jul 15 1998.`

page 1

Search completed in 0.002 seconds

Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

AT&T Labs Research