This is about the primes of the form (b +/- 1)*b^n +/- 1, if b = 1 mod 3, then all numbers of the form (b+1)*b^n+1 are divisible by 3 and cannot be prime, so we do not list this case (b, +1, +1 for b = 1 mod 3). The format is (b +/- 1)*b^n +/- 1. The first +1/-1 corresponds to the first +/- 1 and the second +1/-1 corresponds to the second +/- 1, so for example (53-1)*53^960+1 is 53, -1, +1 960. base, first1, second1 n's for which form is prime 2, -1, -1 2, 3, 5, 7, 13, 17, 19, 31, 61, 89, 107, 127, 521, 607, 1279, 2203, 2281, 3217, 4253, 4423, 9689, 9941, 11213, 19937, 21701, 23209, 44497, 86243, 110503, 132049, 216091, 756839, 859433, 1257787, 1398269, 2976221, 3021377, 6972593, 13466917, 20996011, 24036583, 25964951, 30402457, 32582657, 37156667 2, -1, +1 1, 2, 4, 8, 16 2, +1, -1 1, 2, 3, 4, 6, 7, 11, 18, 34, 38, 43, 55, 64, 76, 94, 103, 143, 206, 216, 306, 324, 391, 458, 470, 827, 1274, 3276, 4204, 5134, 7559, 12676, 14898, 18123, 18819, 25690, 26459, 41628, 51387, 71783, 80330, 85687, 88171, 97063, 123630, 155930, 164987, 234760, 414840, 584995, 702038, 727699, 992700, 1201046, 1232255, 2312734, 3136255, 4235414, 6090515, 11484018, 11731850, 11895718 2, +1, +1 1, 2, 5, 6, 8, 12, 18, 30, 36, 41, 66, 189, 201, 209, 276, 353, 408, 438, 534, 2208, 2816, 3168, 3189, 3912, 20909, 34350, 42294, 42665, 44685, 48150, 54792, 55182, 59973, 80190, 157169, 213321, 303093, 362765, 382449, 709968, 801978, 916773, 1832496, 2145353, 2291610, 2478785, 5082306, 7033641, 10829346 3, -1, -1 1, 2, 3, 7, 8, 12, 20, 23, 27, 35, 56, 62, 68, 131, 222, 384, 387, 579, 644, 1772, 3751, 5270, 6335, 8544, 9204, 12312, 18806, 21114, 49340, 75551, 90012, 128295, 143552, 147488, 1010743, 1063844 3, -1, +1 1, 2, 4, 5, 6, 9, 16, 17, 30, 54, 57, 60, 65, 132, 180, 320, 696, 782, 822, 897, 1252, 1454, 4217, 5480, 6225, 7842, 12096, 13782, 17720, 43956, 64822, 82780, 105106, 152529, 165896, 191814, 529680, 1074726, 1086112, 1175232 3, +1, -1 1, 3, 5, 7, 15, 45, 95, 235, 463, 733, 1437, 1583, 1677, 1803, 4163, 4765, 9219, 9959, 25477, 26059, 41539, 54195, 65057, 74977, 116589, 192289, 311835, 350767, 353635, 416337, 423253 3, +1, +1 1, 2, 3, 6, 14, 15, 39, 201, 249, 885, 1005, 1254, 1635, 3306, 3522, 9602, 19785, 72698 4, -1, -1 1, 2, 3, 9, 17, 19, 32, 38, 47, 103, 108, 153, 162, 229, 235, 637, 1638, 2102, 2567, 6338, 7449, 12845, 20814, 40165, 61815, 77965, 117380, 207420, 351019, 496350, 600523, 1156367, 2117707, 5742009, 5865925, 5947859 4, -1, +1 1, 3, 4, 6, 9, 15, 18, 33, 138, 204, 219, 267, 1104, 1408, 1584, 1956, 17175, 21147, 24075, 27396, 27591, 40095, 354984, 400989, 916248, 1145805, 2541153, 5414673 4, +1, -1 1, 2, 4, 5, 6, 7, 9, 16, 24, 27, 36, 74, 92, 124, 135, 137, 210, 670, 719, 761, 819, 877, 942, 1007, 1085, 1274, 1311, 1326, 1352, 6755, 10869, 12812, 20967, 25739, 26270, 26615, 86150, 122864, 175014 5, -1, -1 1, 3, 9, 13, 15, 25, 39, 69, 165, 171, 209, 339, 2033, 6583, 15393 5, -1, +1 2, 6, 18, 50, 290, 2582, 20462, 23870, 26342, 31938, 38122, 65034, 70130, 245538 5, +1, -1 1, 2, 5, 11, 28, 65, 72, 361, 479, 494, 599, 1062, 1094, 1193, 2827, 3271, 3388, 3990, 4418, 11178, 16294, 25176, 42500, 68320, 85698, 145259, 159119, 169771 5, +1, +1 1, 2, 3, 23, 27, 33, 63, 158, 278, 290, 351, 471, 797, 8462, 28793, 266030 6, -1, -1 1, 2, 6, 7, 11, 23, 33, 48, 68, 79, 116, 151, 205, 1016, 1332, 1448, 3481, 3566, 3665, 11233, 13363, 29166, 44358, 58530, 191706 6, -1, +1 1, 2, 4, 17, 136, 147, 203, 590, 754, 964, 970, 1847, 2031, 2727, 2871, 5442, 7035, 7266, 11230, 23307, 27795, 34152, 42614, 127206, 133086 6, +1, -1 1, 2, 3, 13, 21, 28, 30, 32, 36, 48, 52, 76, 734 6, +1, +1 1, 6, 17, 38, 50, 80, 207, 236, 264, 309, 555 7, -1, -1 1, 2, 7, 18, 55, 69, 87, 119, 141, 189, 249, 354, 1586, 2135, 2865, 2930, 4214, 7167, 67485, 74402, 79326 7, -1, +1 1, 4, 9, 99, 412, 2633, 5093, 5632, 28233, 36780, 47084, 53572 7, +1, -1 4, 7, 10, 14, 23, 59 8, -1, -1 3, 7, 15, 59, 6127, 8703, 11619, 23403, 124299 8, -1, +1 2, 40, 58, 60, 130, 144, 752, 7462, 18162, 69028, 187272, 268178, 270410, 497284, 713304, 722600, 1005254 8, +1, -1 1, 5, 7, 21, 33, 53, 103, 313, 517, 1863, 2669, 3849, 4165, 27805, 34353, 91953, 128081, 336759 8, +1, +1 1, 3, 7, 21, 67, 81, 103, 183, 391, 747, 1413, 1615, 1677, 1845, 2421, 2901, 12211, 19593, 24951, 57427, 192495, 206017, 417405, 525513, 903787 9, -1, -1 1, 2, 5, 25, 85, 92, 97, 649, 2017, 2978, 3577, 4985, 17978, 21365, 66002, 95305, 142199 9, -1, +1 1, 4, 5, 11, 26, 29, 38, 65, 166, 490, 641, 2300, 9440, 44741, 65296, 161930 9, +1, -1 1, 2, 4, 5, 7, 10, 11, 13, 15, 19, 27, 29, 35, 42, 51, 70, 112, 164, 179, 180, 242, 454, 621 9, +1, +1 2, 6, 9, 11, 51, 56, 81, 941 10, -1, -1 1, 3, 7, 19, 29, 37, 93, 935, 8415, 9631, 11143, 41475, 41917, 48051, 107663, 212903, 223871, 260253, 364521, 383643 10, -1, +1 3, 4, 5, 9, 22, 27, 36, 57, 62, 78, 201, 537, 696, 790, 905, 1038, 66886, 70500, 91836, 100613, 127240 10, +1, -1 1, 9, 11, 17, 22, 29, 36, 37, 52, 166, 448, 2011, 3489, 4871, 6982, 10024, 16974, 33287, 47364, 58873, 126160 11, -1, -1 1, 3, 37, 119, 255, 355, 371, 497, 1759, 34863, 50719, 147709 11, -1, +1 10, 24, 864, 2440, 9438, 68272, 148602 11, +1, -1 1, 2, 3, 4, 11, 13, 22, 27, 48, 51, 103, 147, 280, 908 11, +1, +1 2, 3, 6, 8, 138, 149, 222, 363, 995 12, -1, -1 1, 2, 21, 25, 33, 54, 78, 235, 1566, 2273, 2310, 4121, 7775, 42249, 105974, 138961 12, -1, +1 3, 4, 35, 119, 476, 507, 6471, 13319, 31799 12, +1, -1 2, 6, 11, 66, 196, 478 12, +1, +1 1, 2, 8, 9, 17, 26, 62, 86, 152, 365