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A171411 Numbers n such that 1+5*10^n+100^n is prime. 1
0, 1, 2, 4, 5, 8, 27, 165, 230, 237, 369, 485, 628, 875, 964, 1419, 4083 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

No more terms up to n=7600. The value corresponding to 4083 was certified prime with WinPFGW.

LINKS

Table of n, a(n) for n=1..17.

PROG

(PARI) is(n)=ispseudoprime(1+5*10^n+100^n) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A097684 A277289 A218347 * A291607 A092752 A152603

Adjacent sequences:  A171408 A171409 A171410 * A171412 A171413 A171414

KEYWORD

more,nonn

AUTHOR

Jason Earls, Dec 08 2009

STATUS

approved

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Last modified May 29 15:44 EDT 2020. Contains 334704 sequences. (Running on oeis4.)