A228075 - OEIS

A228075

Numbers n whose 10's complement is prime, i.e., 10^k-n, where k is the number of digits of n, is prime.

3, 5, 7, 8, 11, 17, 21, 27, 29, 33, 39, 41, 47, 53, 57, 59, 63, 69, 71, 77, 81, 83, 87, 89, 93, 95, 97, 98, 113, 117, 119, 123, 137, 141, 143, 147, 161, 171, 173, 177, 179, 189, 191, 203, 213, 227, 231, 239, 243, 249, 257, 261, 267, 273, 281, 291, 299

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

A068811 is a subset.

LINKS

Jayanta Basu, Table of n, a(n) for n = 1..1000

EXAMPLE

8 is a term since 10^1 - 8 = 2 is a prime.

Similarly, 39 is a term as 10^2 - 39 = 61 is prime.

MATHEMATICA

Select[Range[300], PrimeQ[10^(IntegerLength[#]) - #] &]