A106425 Smallest number beginning with 5 and having exactly n prime divisors counted with multiplicity.

5, 51, 50, 54, 500, 504, 5000, 576, 512, 5184, 5120, 50176, 51200, 55296, 507904, 516096, 5038848, 589824, 524288, 5308416, 5242880, 51380224, 52428800, 56623104, 50331648, 509607936, 503316480, 5096079360, 536870912, 5435817984