login
A107074
Numbers n such that the string 53n is the decimal expansion of a prime number.
0
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
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
KEYWORD
nonn,base
AUTHOR
Parthasarathy Nambi, Jun 07 2005
STATUS
approved