A055784 Primes q of form q = 10p + 9, where p is also prime.

29, 59, 79, 139, 179, 199, 239, 379, 419, 439, 479, 599, 619, 719, 739, 839, 1019, 1039, 1279, 1319, 1399, 1499, 1579, 1979, 1999, 2239, 2339, 2399, 2579, 2699, 2719, 2819, 2939, 3079, 3119, 3319, 3499, 3539, 3739, 4019, 4099, 4219, 4339, 4639, 4679

Offset

1,1

Links

Table of n, a(n) for n=1..45.

Example

5419 = 541*10 + 9, 9 is appended to 541.

Mathematica

Select[10#+9&/@Prime[Range[100]], PrimeQ] (* Harvey P. Dale, Aug 20 2012 *)

Crossrefs

Cf. A005384, A005385.

Sequence in context: A184073 A080170 A078848 * A083821 A042666 A042668

Adjacent sequences: A055781 A055782 A055783 * A055785 A055786 A055787

Keyword

nonn

Author

Labos Elemer, Jul 13 2000

Status

approved