A046454 Concatenation of the 5 prime factors of composite a(n) is a palindrome.

32, 243, 3125, 16807, 19875, 38955, 51909, 75117, 85683, 94605, 96195, 158389, 161051, 182427, 185493, 205905, 261443, 261555, 320385, 323253, 397047, 439593, 451209, 504357, 507969, 584647, 613977, 617799, 718977, 719955, 795417, 839523

Offset: 0

Author

Patrick De Geest, Jul 15 1998

Keywords

• nonn
• base

Examples

			320385 = 3 * 5 * 13 * 31 * 53 -> 35133153 is palindromic.
		

Crossrefs

Cf. A046447.