1, 7, 17, 49, 53, 83, 91, 97, 109, 113, 121, 127, 131, 151, 167, 173, 179, 181, 187, 209, 253, 271, 281, 287, 289, 293, 307, 341, 343, 347, 349, 401, 403, 421, 443, 449, 461, 463, 469, 473, 487, 517, 523, 527, 529, 539, 547, 553, 557, 569, 589, 607, 623, 637
