Search a number
aban n.  and  interprime n.

First numbers that belong to both sets:

4, 6, 9, 12, 15, 18, 21, 26, 30, 34, 39, 42, 45, 50, 56, 60, 64, 69, 72, 76, 81, 86, 93, 99, 102, 105, 108, 111, 120, 129, 134, 138, 144, 150, 154, 160, 165, 170, 176, 180, 186, 192, 195, 198, 205, 217, 225, 228, 231, 236, 240, 246, 254, 260, 266, 270, 274, 279, 282, 288, 300, 309, 312, 315, 324, 334, 342, 348, 351, 356, 363, 370, 376, 381, 386, 393, 399, 405, 414, 420, 426, 432, 436, 441, 446, 453, 459, 462, 465, 473, 483, 489, 495, 501, 506, 515, 522, 532, 544, 552, 560, 566, 570, 574, 582, 590, 596, 600, 604, 610, 615, 618, 625, 636, 642, 645, 650, 656, 660, 667, 675, 680, 687, 696, 705, 714, 723, 730, 736, 741, 747, 754, 759, 765, 771, 780, 792, 803, 810, 816, 822, 825, 828, 834, 846, 855, 858, 861, 870, 879, 882, 885, 897, 909, 915, 924, 933, 939, 944, 950, 960, 969, 974, 980, 987, 994, 1000018, 1000035, 1000038, 1000060, 1000090, 1000108, 1000119, 1000127, 1000142, 1000155, 1000165, 1000177, 1000185, 1000190, 1000196, 1000205, 1000212, 1000222, 1000240, 1000251, 1000263, 1000281, 1000290, 1000297, 1000308, 1000323, 1000345, 1000362, 1000374, 1000387, 1000395, 1000400, 1000406, 1000416, 1000425, 1000428, 1000441, 1000455, 1000482, 1000522, 1000539, 1000544, 1000562, 1000578, 1000584, 1000599, 1000614, 1000620, 1000630, 1000645, 1000659, 1000668, 1000674, 1000685, 1000694, 1000709, 1000722, 1000743, 1000770, 1000785, 1000811, 1000838, 1000848, 1000854, 1000860, 1000875, 1000898, 1000913, 1000920, 1000926, 1000950, 1000971, 1000977, 1000990, 2000016, 2000034, 2000060, 2000082, 2000088, 2000100, 2000110, 2000128, 2000145, 2000150, 2000165, 2000193, 2000215, 2000224, 2000238, 2000255, 2000265, 2000275, 2000286, 2000292, 2000298, 2000306, 2000315, 2000325, 2000340, 2000352, 2000362, 2000376, 2000384, 2000388, 2000391, 2000403, 2000415, 2000420, 2000426, 2000438, 2000472, 2000500, 2000511, 2000520.

Some larger examples :