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A228075 Numbers n such that its 10's complement is prime, i.e., 10^k-n, where k is the number of digits of n, is prime. 2
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 member since 10^1 - 8 = 2 is a prime. Similarly, 39 is a member as 10^2 - 39 = 61 is prime.

MATHEMATICA

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

CROSSREFS

Cf. A068811.

Sequence in context: A024969 A296233 A276112 * A032420 A127458 A039003

Adjacent sequences:  A228072 A228073 A228074 * A228076 A228077 A228078

KEYWORD

nonn,base

AUTHOR

Jayanta Basu, Aug 09 2013

STATUS

approved

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Last modified November 20 20:54 EST 2018. Contains 317422 sequences. (Running on oeis4.)