2, 3, 5, 7, 11, 13, 31, 41, 43, 53, 61, 79, 97, 101, 109, 113, 137, 139, 179, 191, 197, 229, 233, 239, 251, 271, 281, 311, 313, 331, 337, 347, 353, 367, 373, 379, 383, 401, 409, 433, 443, 463, 487, 499, 503, 521, 541, 547, 563, 577, 587, 593, 599, 631, 641