Question 1132328: which numbers that are less than 100 have the greatest number of different prime factors? How many factors do these numbers have? Answer by math_helper(2461) (Show Source):
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The prime factors must be distinct. The numbers 30(=2*3*5), 42(=2*3*7), 66(=2*3*11), 78(=2*3*13), and 70(=2*5*7) each have three distinct prime factors.