Search a number
semiprime  and  uban n.

First numbers that belong to both sets:

6, 9, 10, 15, 21, 22, 25, 26, 33, 35, 38, 39, 46, 49, 51, 55, 57, 58, 62, 65, 69, 77, 82, 85, 86, 87, 91, 93, 95, 1000001, 1000007, 1000009, 1000011, 1000015, 1000018, 1000019, 1000021, 1000023, 1000031, 1000045, 1000047, 1000049, 1000057, 1000058, 1000061, 1000063, 1000067, 1000069, 1000079, 1000082, 1000085, 1000087, 1000091, 1000097, 2000001, 2000006, 2000013, 2000017, 2000021, 2000023, 2000045, 2000047, 2000049, 2000051, 2000057, 2000066, 2000069, 2000071, 2000077, 2000078, 2000087, 2000091, 2000099, 3000001, 3000009, 3000013, 3000023, 3000031, 3000038, 3000043, 3000049, 3000053, 3000055, 3000059, 3000071, 3000079, 3000082, 3000083, 3000086, 3000091, 3000097, 3000099, 5000015, 5000017, 5000018, 5000027, 5000029, 5000033, 5000041, 5000047, 5000053, 5000063, 5000071, 5000089, 5000098, 5000099, 6000009, 6000013, 6000017, 6000019, 6000035, 6000037, 6000058, 6000077, 6000079, 6000083, 6000087, 6000089, 6000091, 6000097, 7000001, 7000013, 7000021, 7000027, 7000031, 7000041, 7000043, 7000046, 7000051, 7000066, 7000079, 7000082, 7000085, 7000093, 8000003, 8000011, 8000029, 8000041, 8000049, 8000057, 8000059, 8000077, 8000078, 8000079, 8000081, 8000086, 8000089, 8000093, 9000001, 9000007, 9000017, 9000019, 9000023, 9000031, 9000051, 9000058, 9000071, 9000073, 9000077, 9000079, 9000083, 9000085, 9000086, 9000087, 9000097, 9000098, 10000001, 10000003, 10000007, 10000009, 10000013, 10000015, 10000021, 10000022, 10000027, 10000031, 10000033, 10000043, 10000051, 10000057, 10000063, 10000069, 10000073, 10000087, 10000091, 10000093, 10000097, 11000006, 11000009, 11000018, 11000021, 11000023, 11000029, 11000033, 11000039, 11000042, 11000047, 11000051, 11000065, 11000093, 12000005, 12000011, 12000013, 12000019, 12000022, 12000023, 12000031, 12000041, 12000046, 12000047, 12000049, 12000059, 12000061, 12000067, 12000071, 12000077, 12000082, 12000083, 12000089, 12000095, 13000006, 13000007, 13000011, 13000017, 13000021, 13000039, 13000046, 13000051, 13000055, 13000057, 13000058, 13000063, 13000073, 13000079, 13000089, 13000093, 13000099, 15000019, 15000023, 15000026, 15000033, 15000037, 15000043, 15000047, 15000049, 15000058, 15000059, 15000061, 15000077, 15000085, 15000089, 15000091, 15000098, 16000003, 16000007, 16000013, 16000015, 16000018, 16000021, 16000031, 16000037, 16000039, 16000041, 16000043, 16000046, 16000051, 16000059, 16000063, 16000066, 16000073, 16000087, 16000091, 16000093, 16000099, 17000009, 17000021, 17000029, 17000031, 17000033, 17000039.

Some larger examples :