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There are an infinite number of them. 8 has three prime factors, 30 is the first with three distinct prime factors.

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Q: What number has exactly 3 prime factors?

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The square of a prime number.

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A number has exactly three factors if and only if it is the square of a prime number.

3 is a prime number because it has exactly two distinct factors. The only factors of a prime number are 1 and itself. The only factors of 3 are 1 and 3, so it is a prime number.

By definition, a prime number has exactly two factors. So, there are no prime numbers with exactly three factors.

Squares of prime numbers.

The square of any prime number has exactly 3 factors. They are: 1). 1 2). the number itself 3). the prime number which is its square-root

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3 is a prime number because it has exactly two factors which are whole numbers: itself and one. This is the definition of a prime.

A prime number, like 2, 3 or 5.

A prime number is a number with exactly two distinct factors: itself and oneThe only factors of 3 are 1 and 3 so it is a prime number.The factors of 6 are 1,2,3 and 6 which has more than two factors so it is not a prime number.

There are an infinite number of them. 8 has three prime factors, 30 is the first with three distinct prime factors.

How about 105 whose prime factors are 3, 5 and 7

1617 is not a prime number. The sum of its digits is a multiple of 3, so 3 is one of its factors. A prime number has exactly two factors, 1 and the number itself, so 1617 is a composite number.

Prime numbers have exactly two factors. 3 has exactly two factors: 1 and 3. So 3 is prime. Composite numbers have more than two factors. 4 is composite because it has three factors: 1, 2, and 4.

A prime number has exactly two factors, 1 and the number itself. 33 obviously has more factors because it is a multiple of 3 and 11, so it is not a prime.

105

The ones with prime number roots.

3315 has four prime factors they are 3, 5, 13, and 17

As a product of its prime factors: 2*3*5*7*11 = 2310 is one example

The square of any prime number has exactly three factors: 22, 32, 52, etc.

Squares of prime numbers have exactly three factors.

30, 42, 66, 78, 102, 105, 114, 138 all have exactly three distinct prime factors.

3 is a prime number. Its only prime factor is 3.

I found 105,63 and 27