Search a number
Chen prime  and  strong prime

First numbers that belong to both sets:

11, 17, 29, 37, 41, 59, 67, 71, 101, 107, 127, 137, 149, 179, 191, 197, 227, 239, 251, 269, 281, 307, 311, 347, 379, 419, 431, 461, 479, 487, 499, 521, 541, 557, 569, 587, 599, 617, 631, 641, 659, 701, 719, 751, 769, 787, 809, 821, 827, 857, 877, 881, 937, 991, 1009, 1019, 1031, 1049, 1061, 1091, 1117, 1151, 1163, 1229, 1277, 1289, 1297, 1301, 1319, 1361, 1399, 1427, 1451, 1471, 1481, 1487, 1567, 1607, 1619, 1667, 1697, 1721, 1733, 1777, 1787, 1801, 1847, 1871, 1877, 1901, 1931, 1949, 1997, 2027, 2081, 2087, 2111, 2129, 2141, 2153, 2237, 2267, 2281, 2309, 2333, 2339, 2381, 2389, 2411, 2459, 2467, 2531, 2549, 2579, 2591, 2609, 2647, 2657, 2687, 2711, 2729, 2741, 2789, 2801, 2857, 2879, 2897, 2969, 2999, 3011, 3037, 3061, 3119, 3167, 3181, 3187, 3203, 3251, 3257, 3299, 3329, 3359, 3371, 3389, 3407, 3457, 3461, 3467, 3491, 3511, 3527, 3539, 3557, 3581, 3659, 3671, 3691, 3719, 3761, 3767, 3821, 3847, 3851, 3907, 3917, 3929, 3989, 4001, 4019, 4049, 4091, 4127, 4157, 4211, 4217, 4229, 4241, 4259, 4271, 4283, 4337, 4349, 4357, 4391, 4421, 4441, 4447, 4481, 4517, 4547, 4591, 4637, 4649, 4721, 4787, 4799, 4861, 4871, 4931, 4967, 4987, 4999, 5009, 5021, 5039, 5051, 5077, 5099, 5147, 5167, 5189, 5231, 5261, 5279, 5297, 5347, 5381, 5417, 5431, 5441, 5471, 5477, 5501, 5519, 5639, 5651, 5657, 5711, 5737, 5741, 5801, 5849, 5867, 5879, 5897, 5981, 6007, 6029, 6089, 6113, 6131, 6143, 6197, 6247, 6257, 6269, 6299, 6311, 6337, 6359, 6421, 6449, 6521, 6551, 6569, 6637, 6659, 6689, 6701, 6761, 6779, 6791, 6827, 6869, 6899, 6947, 6959, 6997, 7039, 7069, 7121, 7127, 7151, 7177, 7211, 7229, 7307, 7321, 7331, 7349.

Some larger examples :