A125780 Numbers n such that n^8 + 1, n^8 + 3, n^8 + 7 and n^8 + 9 are all prime.

5241160, 19083350, 24619690, 53634830, 56604020

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Mathematica

Do[If[(PrimeQ[x^8+1])&&(PrimeQ[x^8+3])&&(PrimeQ[x^8+7])&&(PrimeQ[x^8+9]), Print[x]], {x, 1, 30000000}] (*Artur Jasinski*)
Select[Range[567*10^5], AllTrue[#^8 +{1, 3, 7, 9}, PrimeQ]&] (* Harvey P. Dale, Oct 22 2024 *)

Crossrefs

Cf. A125779.

Sequence in context: A257160 A254742 A333587 * A294988 A183746 A183706

Adjacent sequences: A125777 A125778 A125779 * A125781 A125782 A125783

Keyword

nonn

Author

Artur Jasinski, Dec 11 2006

Status

approved