A188764 Primes p such that all prime factors of p-2 have exponent 3.

29, 127, 24391, 274627, 328511, 357913, 571789, 1157627, 1442899, 1860869, 2146691, 2924209, 5177719, 9129331, 9938377, 10503461, 12326393, 15438251, 18191449, 24642173, 26730901, 28372627, 30080233, 39651823

Offset

1,1

Links

Table of n, a(n) for n=1..24.

Example

30080233-2=311^3, 39651823-2=11^3*31^3,..

Mathematica

Select[Table[Prime[n], {n, 3000000}], Length[Union[Last/@FactorInteger[#-2]]]==1&&Union[Last/@FactorInteger[#-2]]=={3}&]
Select[Prime[Range[25*10^5]], Union[FactorInteger[#-2][[All, 2]]]=={3}&] (* Harvey P. Dale, Nov 22 2018 *)

Crossrefs

Cf. A089195, A188717.

Sequence in context: A142438 A342823 A118097 * A048636 A044361 A044742

Adjacent sequences: A188761 A188762 A188763 * A188765 A188766 A188767

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Apr 09 2011

Status

approved