

A171227


Numbers k such that 9 + 10^k + 9*100^k is prime.


0



0, 1, 4, 17, 26, 28, 47, 70, 91, 1129, 4334, 12347
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OFFSET

1,3


COMMENTS

No more terms up to k = 4100.


LINKS



EXAMPLE

19, 919, 900010009 are prime so that 0, 1 and 4 are terms.


PROG



CROSSREFS



KEYWORD

more,nonn


AUTHOR



EXTENSIONS



STATUS

approved



