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The smallest prime factors are 2,3,5,7 thus the smallest number would be the product of these will be 210

Q: What is the smallest number that has 4 different prime factors?

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How about: 105

1155

30,030 Factorization: 2x3x5x7x11x13

210 with factors of 2, 3, 5, and 7

The smallest number with three different prime factors is 30.

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Logically, the smallest number with 4 different prime factors would have to be the product of the smallest four prime numbers. So the smallest natural number with four different prime factors is 210 (2*3*5*7).

How about: 105

1155

5 and 11

30,030 Factorization: 2x3x5x7x11x13

If a number has 5 factors then it most certainly is not prime. Hence there is some confusion as to what you are asking here.

210 with factors of 2, 3, 5, and 7

36

154

The smallest number with three different prime factors is 30.

Just multiply the first three prime numbers together.

70 is the smallest number that has prime factors of 2,5 and 7