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A171582 Numbers n such that 10^n*(4+3*10^n)+3 is prime. 0
2, 6, 72, 246, 273, 292, 915 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

No more terms up to n=7200.

LINKS

Table of n, a(n) for n=1..7.

PROG

(PARI) is(n)=ispseudoprime(10^n*(4+3*10^n)+3) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A180982 A195690 A329965 * A152885 A295182 A052613

Adjacent sequences:  A171579 A171580 A171581 * A171583 A171584 A171585

KEYWORD

more,nonn

AUTHOR

Jason Earls, Dec 12 2009

STATUS

approved

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Last modified February 28 05:46 EST 2020. Contains 332321 sequences. (Running on oeis4.)