A099230 Numbers n such that n*((2^61-1)^3) - 1 and n*((2^61-1)^3) + 1 are twin primes.

27258, 33192, 36318, 39288, 47478, 59778, 86940, 114000, 114462, 117852, 156900, 157848, 182070, 212670, 220020, 229572, 248328, 281622, 290490, 293832, 303732, 307590, 317328, 364080, 376950, 378030, 390702, 419100, 423192, 432870, 437322, 454848, 473622

Offset

1,1

Links

Table of n, a(n) for n=1..33.

Mathematica

tpQ[n_]:=Module[{c=(2^61-1)^3}, AllTrue[n*c+{1, -1}, PrimeQ]]; Select[ Range[ 600000], tpQ] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, May 16 2016 *)

Crossrefs

Cf. A099229 A099231.

Sequence in context: A157820 A251777 A032746 * A267706 A237381 A109481

Adjacent sequences: A099227 A099228 A099229 * A099231 A099232 A099233

Keyword

nonn

Author

Pierre CAMI, Oct 07 2004

Extensions

Corrected and extended by Harvey P. Dale, May 16 2016

Status

approved