A244765 Prime numbers ending in the prime number 19.

19, 419, 619, 719, 919, 1019, 1319, 1619, 2719, 2819, 3019, 3119, 3319, 3719, 3919, 4019, 4219, 4519, 4919, 5119, 5419, 5519, 6619, 6719, 7019, 7219, 7919, 8219, 8419, 8719, 8819, 9319, 9419, 9619, 9719, 11119, 11519, 11719, 12119, 12619, 12919, 13219

Offset: 1

Author

Vincenzo Librandi, Jul 06 2014

Keywords

• nonn
• base
• easy

Comments

Also primes of the form 100*n+19. Subsequence of A141887, A141942.

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A141887, A141942.

Cf. similar sequences listed in A244763.

Programs

Magma

[n: n in PrimesUpTo(16000) | n mod 100 eq 19];

Mathematica

Select[Prime[Range[5, 6000]], Take[IntegerDigits[#], -2]=={1, 9} &]
Select[Prime[Range[1600]],Mod[#,100]==19&] (* Harvey P. Dale, Jul 29 2018 *)

PARI

select(x->(x % 100)==19, primes(2000)) \\ Michel Marcus, Jul 06 2014