Best Answer

There isn't one. Negative numbers have prime factors and numbers don't stop.

The smallest positive numbers with a prime factor is 2.

Q: What is the smallest number with prime factors?

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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

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

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).

The smallest positive integer is 3.

Starting from beginning we see that 0 has infinite factors so it is a composite number and 1 is neither prime nor composite. The next number is 2 which has only two factors so it is the smallest Prime number.

It is 7 because as the product of its prime factors they are: 7*151*223 = 235,711

70

It is: 30

How about: 210

How about: 105

1155

70