Search a number
apocalyptic n.  and  prime n.

First numbers that belong to both sets:

157, 251, 443, 499, 541, 647, 787, 823, 857, 859, 929, 937, 977, 983, 1019, 1031, 1087, 1103, 1217, 1259, 1277, 1279, 1289, 1301, 1303, 1321, 1399, 1429, 1483, 1487, 1493, 1499, 1627, 1663, 1667, 1669, 1723, 1753, 1777, 1783, 1811, 1823, 1831, 1871, 1889, 1933, 1979, 1987, 2039, 2053, 2069, 2081, 2083, 2099, 2113, 2131, 2143, 2161, 2239, 2243, 2251, 2267, 2269, 2273, 2281, 2287, 2293, 2311, 2333, 2347, 2351, 2383, 2389, 2399, 2447, 2467, 2473, 2477, 2543, 2549, 2551, 2557, 2579, 2591, 2593, 2609, 2657, 2659, 2677, 2683, 2687, 2699, 2741, 2767, 2789, 2791, 2801, 2819, 2833, 2837, 2843, 2857, 2861, 2879, 2887, 2909, 2927, 2939, 2953, 2957, 2971, 3001, 3011, 3019, 3037, 3041, 3049, 3067, 3083, 3119, 3137, 3169, 3181, 3187, 3191, 3217, 3221, 3229, 3251, 3253, 3257, 3307, 3323, 3329, 3331, 3371, 3373, 3389, 3391, 3407, 3433, 3461, 3463, 3467, 3469, 3491, 3511, 3533, 3557, 3559, 3581, 3583, 3607, 3617, 3623, 3659, 3671, 3673, 3677, 3691, 3709, 3719, 3727, 3733, 3739, 3761, 3767, 3797, 3821, 3847, 3851, 3853, 3889, 3907, 3911, 3919, 3923, 3929, 3943, 3947, 3967, 3989, 4021, 4027, 4049, 4051, 4057, 4079, 4091, 4093, 4099, 4157, 4159, 4201, 4211, 4217, 4219, 4229, 4231, 4253, 4261, 4271, 4273, 4283, 4289, 4327, 4339, 4357, 4363, 4391, 4409, 4421, 4423, 4441, 4447, 4451, 4457, 4463, 4493, 4507, 4513, 4517, 4519, 4523, 4547, 4549, 4567, 4583, 4591, 4637, 4643, 4649, 4651, 4657, 4663, 4673, 4679, 4729, 4733, 4751, 4759, 4783, 4787, 4789, 4793, 4799, 4801, 4861, 4871, 4877, 4889, 4903, 4909, 4931, 4933, 4937, 4951, 4957, 4967, 4969, 4973, 4987, 4993, 4999, 5009, 5021, 5039, 5059, 5077, 5081, 5087, 5107, 5113, 5119, 5153, 5167, 5171, 5179, 5189, 5197.

Some larger examples :