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interprime n.  and  Ulam n.

First numbers that belong to both sets:

4, 6, 18, 26, 69, 72, 99, 102, 138, 180, 236, 260, 282, 309, 324, 356, 363, 370, 414, 441, 483, 522, 544, 566, 861, 1020, 1032, 1167, 1230, 1313, 1377, 1404, 1428, 1431, 1465, 1604, 1616, 1660, 1941, 2034, 2112, 2134, 2247, 2354, 2420, 2550, 2613, 2674, 2696, 2811, 2985, 3219, 3390, 3495, 3544, 3610, 3723, 3764, 3918, 3930, 4038, 4155, 4260, 4368, 4600, 4641, 4646, 4668, 4800, 4883, 4925, 4971, 4996, 5079, 5184, 5316, 5384, 5880, 5900, 5946, 6107, 6393, 6525, 6552, 6735, 6831, 6870, 6909, 6914, 6980, 7041, 7063, 7302, 7520, 7539, 7605, 7774, 7820, 7881, 7930, 7950, 8253, 8404, 8421, 8426, 8541, 8553, 8666, 8844, 8966, 9054, 9118, 9135, 9184, 9193, 9240, 9621, 9807, 9836, 9958, 10085, 10107, 10173, 10269, 10413, 10545, 10677, 10850, 11085, 11226, 11319, 11388, 11500, 11627, 11737, 11781, 11925, 11964, 12060, 12162, 12336, 12465, 12580, 12595, 12639, 12680, 13303, 13506, 13572, 13689, 13692, 13758, 13875, 13917, 14085, 14298, 14322, 14325, 14427, 14559, 14691, 14769, 14894, 14926, 15080, 15138, 15324, 15380, 15441, 15642, 15705, 15732, 15744, 15820, 15879, 16240, 16287, 16336, 16355, 16419, 16744, 16912, 16934, 17330, 17391, 17474, 17545, 17560, 17589, 17604, 17772, 18083, 18146, 18195, 18278, 18295, 18430, 18725, 18918, 19060, 19160, 19314, 19353, 19397, 19480, 19590, 19600, 19698, 19722, 19830, 20155, 20421, 20756, 20912, 21015, 21064, 21130, 21413, 21496, 21582, 21738, 21887, 22034, 22593, 22835, 22874, 22962, 23028, 23055, 23199, 23336, 23439, 23742, 23871, 23883, 23979, 24323, 24365, 24477, 24602, 24665, 24849, 25450, 25530, 25767, 25858, 26180, 26637, 26730, 27204, 27282, 27624, 27776, 28172, 28406, 28431, 28756, 28905, 28924, 29247, 29440, 29811, 29899, 30021, 30053, 30090, 30192, 30332, 30674, 30742, 30960, 31324, 31368, 31473, 31646, 31693, 31866, 31878, 32018, 32054.

Some larger examples :