A105146 Numbers k such that the string k100001 is prime.

2, 6, 17, 23, 26, 38, 39, 42, 59, 63, 83, 89, 96, 102, 107, 117, 135, 144, 146, 153, 159, 174, 179, 182, 185, 189, 191, 192, 194, 201, 206, 230, 233, 237, 240, 245, 248, 249, 251, 252, 270, 279, 285, 287, 293, 299, 300, 318, 321, 329, 335, 339, 345, 350, 354, 356, 378, 387, 392

Offset

1,1

Links

Table of n, a(n) for n=1..59.

Example

k=2 is in the sequence because k100001 = 2100001 is prime.
k=96 is in the sequence because k100001 = 96100001 is prime.

Prog

(Magma) [ n: n in [1..400] | IsPrime(Seqint([1, 0, 0, 0, 0, 1] cat Intseq(n))) ]; // Vincenzo Librandi, Feb 03 2011

Crossrefs

Cf. A105106, A105107.

Sequence in context: A057497 A063627 A069014 * A076660 A379558 A024310

Adjacent sequences: A105143 A105144 A105145 * A105147 A105148 A105149

Keyword

base,nonn

Author

Parthasarathy Nambi, Apr 09 2005

Status

approved