A056983 Primes for which Smarandache-Wagstaff function exists (see A125138).

3, 11, 17, 23, 29, 37, 41, 43, 53, 67, 73, 79, 97, 101, 107, 109, 127, 131, 139, 149, 151, 157, 163, 173, 191, 199, 211, 229, 239, 251, 257, 263, 271, 281, 283, 293, 307, 311, 313, 331, 337, 347, 349, 359, 373, 379, 383, 389, 397, 409, 421, 433, 443, 449