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

Author

Parthasarathy Nambi, Apr 09 2005

Keywords

• base
• nonn

Examples

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

Crossrefs

Cf. A105106, A105107.

Programs

Magma

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