A227823 Numbers n with property that each sum of any k-subsequence of digits of n with k>=2 is prime.

11, 12, 14, 16, 20, 21, 23, 25, 29, 30, 32, 34, 38, 41, 43, 47, 49, 50, 52, 56, 58, 61, 65, 67, 70, 74, 76, 83, 85, 89, 92, 94, 98, 111, 203, 205, 230, 250, 302, 320, 502, 520

Offset: 1

Author

Derek Orr, Jul 31 2013

Keywords

• nonn
• base
• fini
• full
• easy

Comments

111 is the only number > 100 with all nonzero digits.

Examples

			203 is in the sequence because 2+0=2, 2+3=5, 0+3=3, 2+0+3=5 and 2,3,5 are all prime.
		

Crossrefs

Numbers are contained in both A028834 and A221699.