A046356 Odd numbers with only palindromic prime factors whose sum is palindromic (counted with multiplicity).

9, 15, 27, 45, 121, 495, 735, 875, 1331, 1701, 2025, 2101, 2121, 2525, 2751, 3171, 3275, 3775, 3801, 4525, 5445, 6573, 7413, 7825, 7833, 8043, 8085, 8595, 8767, 8825, 9325, 9575, 9625, 10201, 12005, 13231, 14641, 15251, 15267, 15897, 16527, 17161

Offset: 0

Author

Patrick De Geest, Jun 15 1998

Keywords

• nonn
• base

Examples

			8767 = 11 * 797 -> 11 + 797 = 808 and 808 is a palindrome.
		

Crossrefs

Cf. A046355, A046357.

Programs

Mathematica

palQ[n_] := Reverse[x=IntegerDigits[n]] == x; Select[Range[9,17170,2], !PrimeQ[#] && And@@palQ/@Join[{Total[Times@@@(x=FactorInteger[#])]}, First/@x]&] (* Jayanta Basu, Jun 05 2013 *)