A109293 Numbers n such that the string n23572357 is prime.

31, 36, 42, 78, 90, 97, 102, 109, 139, 141, 150, 177, 189, 193, 198, 205, 207, 210, 213, 223, 232, 234, 265, 267, 286, 304, 318, 325, 328, 330, 331, 343, 354, 358, 382, 384, 399, 402, 403, 406, 414, 415, 435, 442, 447, 451, 454, 477, 483, 493, 501, 504, 508, 513, 517, 520, 525, 532, 552

Offset

1,1

Links

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

Example

n=4 is not in the sequence because  n23572357 = 423572357 = 13*17*1916617 is composite.

Crossrefs

Sequence in context: A299455 A225138 A300093 * A053684 A336178 A044973

Adjacent sequences: A109290 A109291 A109292 * A109294 A109295 A109296

Keyword

nonn,base

Author

Parthasarathy Nambi, Aug 20 2005

Status

approved