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