A107074 Numbers n such that the string 53n is the decimal expansion of a prime number.

23, 33, 47, 51, 81, 87, 93, 99, 101, 113, 117, 129, 147, 149, 161, 171, 173, 189, 197, 201, 231, 233, 239, 267, 269, 279, 281, 299, 309, 323, 327, 353, 359, 377, 381, 401, 407, 411, 419, 437, 441, 453, 479, 503, 507, 527, 549, 551, 569, 591, 593, 597, 609

Offset

1,1

Links

Table of n, a(n) for n=1..53.

Example

n=113 is in the sequence because 53113 is prime.

Prog

(Magma) [ n: n in [1..700] | IsPrime(Seqint(Intseq(n) cat [3, 5])) ];

Crossrefs

Sequence in context: A118298 A209247 A076091 * A264101 A355118 A038356

Adjacent sequences: A107071 A107072 A107073 * A107075 A107076 A107077

Keyword

nonn,base

Author

Parthasarathy Nambi, Jun 07 2005

Status

approved