A108405 Numbers n such that a^u + b^u + c^u + ... is prime, where a*b*c* ... is the prime factorization of n and u is the largest prime dividing n.

12, 28, 40, 48, 54, 80, 90, 96, 104, 108, 224, 350, 384, 390, 432, 500, 567, 570, 660, 686, 720, 770, 775, 810, 972, 1085, 1176, 1551, 1575, 1875, 2016, 2400, 2560, 2600, 2700, 2760, 2829, 2880, 2925, 3072, 3456, 3640, 3645, 3888, 4260, 4374, 4400, 4692