A067841 Numbers n such that n and prime(n) end with the same three digits.

1491, 1723, 4119, 4437, 6347, 6931, 7817, 9551, 12083, 12637, 13647, 15103, 16637, 17181, 18697, 20281, 22743, 23071, 23787, 24833, 25753, 25833, 26173, 26349, 27129, 29201, 29287, 29543, 30059, 30563, 33163, 33673, 34241, 35919, 36003, 36853, 37289, 38653, 39927

Offset

1,1

Comments

Subsequence of A067838. - Michel Marcus, Nov 18 2013

Links

Table of n, a(n) for n=1..39.

Example

prime(1491)=12491 hence 1491 is in the sequence.

Mathematica

Select[Range[2, 4 10^4], Mod[Prime[#], 1000]== Mod[#, 1000] &] (* Vincenzo Librandi, Oct 03 2017 *)

Prog

(PARI) isok(n) = (n % 1000) == (prime(n) % 1000); \\ Michel Marcus, Nov 18 2013
(Magma) [n: n in [1..4*10^4] | (n mod 1000) eq (NthPrime(n) mod 1000)]; // Vincenzo Librandi Oct 03 2017

Crossrefs

Sequence in context: A137705 A367769 A171617 * A237968 A062912 A328975

Adjacent sequences: A067838 A067839 A067840 * A067842 A067843 A067844

Keyword

easy,nonn,base

Author

Benoit Cloitre, Mar 07 2002

Status

approved