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A259631 Numbers k such that the Phi_3(10^10000+k) is prime, where Phi is a cyclic polynomial. 1
8929, 45937, 49256, 50060, 76204, 76855, 125708, 127919, 137050, 137335, 137944, 147466, 163822, 193939, 267131, 295882, 299977, 312610, 322255, 322499, 322988, 370763, 403085, 436060, 458119, 571253, 574597, 601558, 610697, 626978, 627820, 630109, 647039 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(53) > 10^6.

LINKS

Robert Price, Table of n, a(n) for n = 1..52

MATHEMATICA

Select[Range[1, 10^6], PrimeQ[(10^10000 + #)^2 + (10^10000 + #) + 1] &]

PROG

(PARI) is(k)=ispseudoprime(subst('x^2+'x+1, 'x, 10^10000+k)) \\ Charles R Greathouse IV, Aug 05 2015

(PFGW) ABC2 (10^10000+$a)^2 + (10^10000+$a) + 1

a: from 1 to 10000

Charles R Greathouse IV, Aug 05 2015

CROSSREFS

Cf. A002061, A002383, A002384.

Sequence in context: A065235 A087167 A290811 * A251921 A217604 A218389

Adjacent sequences:  A259628 A259629 A259630 * A259632 A259633 A259634

KEYWORD

nonn

AUTHOR

Robert Price, Aug 05 2015

STATUS

approved

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Last modified September 19 13:01 EDT 2020. Contains 337178 sequences. (Running on oeis4.)