A086476 Primes p such that 32p+1 and (p-1)/32 are both prime.

1889, 8609, 11489, 25889, 32609, 46049, 67169, 98849, 99809, 107873, 120929, 124193, 128033, 139169, 142433, 157793, 167393, 168353, 196193, 208673, 210209, 241313, 288929, 295073, 308129, 311009, 324449, 354209, 377633, 396833, 403553

Offset

1,1

Links

Table of n, a(n) for n=1..31.

Example

1889 is a member as (1889-1)/32 = 59 and 32*1889 + 1= 60449 are both prime.

Mathematica

Prime[ Select[ Range[37063], PrimeQ[(Prime[ # ] - 1)/2^5] && PrimeQ[2^5Prime[ # ] + 1] & ]]
Select[Prime[Range[35000]], And@@PrimeQ[{32#+1, (#-1)/32}]&] (* Harvey P. Dale, Jan 23 2013 *)

Crossrefs

Cf. A085957, A085958, A086477, A086478.

Sequence in context: A206746 A106764 A157486 * A279621 A168226 A151721

Adjacent sequences: A086473 A086474 A086475 * A086477 A086478 A086479

Keyword

nonn

Author

Amarnath Murthy and Jason Earls, Jul 22 2003

Extensions

Edited and extended by Robert G. Wilson v, Jul 26 2003

Status

approved