Four-Digit Prime Numbers by Tens (Part 8: 8000-9000)

You will be given four four-digit numbers that differ only by the last digit being 1, 3, 7, or 9. Answer which ones are prime numbers.
Example: If you are given "21, 23, 27, 29", only 23 and 29 are prime numbers, so you should choose "3, 9"
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2014MELO03
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Last updated: March 30, 2025
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First submittedMarch 30, 2025
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8931, 8933, 8937, 8939
8881, 8883, 8887, 8889
8461, 8463, 8467, 8469
8391, 8393, 8397, 8399
8091, 8093, 8097, 8099
8031, 8033, 8037, 8039
8191, 8193, 8197, 8199
8471, 8473, 8477, 8479
8701, 8703, 8707, 8709
8791, 8793, 8797, 8799
8421, 8423, 8427, 8429
8771, 8773, 8777, 8779
8521, 8523, 8527, 8529
8361, 8363, 8367, 8369
8321, 8323, 8327, 8329
8691, 8693, 8697, 8699
8991, 8993, 8997, 8999
8711, 8713, 8717, 8719
8981, 8983, 8987, 8989
8141, 8143, 8147, 8149
8111, 8113, 8117, 8119
8251, 8253, 8257, 8259
8311, 8313, 8317, 8319
8121, 8123, 8127, 8129
8861, 8863, 8867, 8869
8071, 8073, 8077, 8079
8011, 8013, 8017, 8019
8671, 8673, 8677, 8679
8651, 8653, 8657, 8659
8241, 8243, 8247, 8249
8451, 8453, 8457, 8459
8211, 8213, 8217, 8219
8431, 8433, 8437, 8439
8551, 8553, 8557, 8559
8641, 8643, 8647, 8649
8901, 8903, 8907, 8909
8731, 8733, 8737, 8739
8151, 8153, 8157, 8159
8721, 8723, 8727, 8729
8101, 8103, 8107, 8109
8061, 8063, 8067, 8069
8491, 8493, 8497, 8499
8821, 8823, 8827, 8829
8481, 8483, 8487, 8489
8271, 8273, 8277, 8279
8181, 8183, 8187, 8189
8961, 8963, 8967, 8969
8661, 8663, 8667, 8669
8041, 8043, 8047, 8049
8341, 8343, 8347, 8349
8681, 8683, 8687, 8689
8761, 8763, 8767, 8769
8541, 8543, 8547, 8549
8511, 8513, 8517, 8519
8531, 8533, 8537, 8539
8951, 8953, 8957, 8959
8941, 8943, 8947, 8949
8591, 8593, 8597, 8599
8371, 8373, 8377, 8379
8331, 8333, 8337, 8339
8781, 8783, 8787, 8789
8561, 8563, 8567, 8569
8291, 8293, 8297, 8299
8841, 8843, 8847, 8849
8871, 8873, 8877, 8879
8831, 8833, 8837, 8839
8921, 8923, 8927, 8929
8801, 8803, 8807, 8809
8021, 8023, 8027, 8029
8201, 8203, 8207, 8209
8261, 8263, 8267, 8269
8381, 8383, 8387, 8389
8581, 8583, 8587, 8589
8911, 8913, 8917, 8919
8751, 8753, 8757, 8759
8081, 8083, 8087, 8089
8601, 8603, 8607, 8609
8411, 8413, 8417, 8419
8051, 8053, 8057, 8059
8741, 8743, 8747, 8749
8971, 8973, 8977, 8979
8301, 8303, 8307, 8309
8161, 8163, 8167, 8169
8351, 8353, 8357, 8359
8811, 8813, 8817, 8819
8131, 8133, 8137, 8139
8231, 8233, 8237, 8239
8401, 8403, 8407, 8409
8851, 8853, 8857, 8859
8221, 8223, 8227, 8229
8571, 8573, 8577, 8579
8171, 8173, 8177, 8179
8441, 8443, 8447, 8449
8621, 8623, 8627, 8629
8611, 8613, 8617, 8619
8631, 8633, 8637, 8639
8281, 8283, 8287, 8289
8891, 8893, 8897, 8899
8501, 8503, 8507, 8509
8001, 8003, 8007, 8009
0none
11
13
17
19
21, 3
21, 7
21, 9
23, 7
23, 9
27, 9
31, 3, 7
31, 3, 9
31, 7, 9
33, 7, 9
4all
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