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There are no numbers below 100 that are divisible by more than 3 prime factors.

Those numbers are in the group:

30 = 2 * 3 * 5

42 = 2 * 3 * 7

66 = 2 * 3 * 11

78 = 2 * 3 * 13

70 = 2 * 5 * 7

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Q: What number under 100 is divisible by the most prime numbers?
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Because the four smallest prime numbers are 2, 3, 5, and 7. If you multiply these four together you get 210 (which makes 210 the smallest number divisible by four unique prime numbers).


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