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Q: Is 15 a prime numbetr

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5 is but 15 is not a prime number

The prime factors of 15 are: 3, 5

15 is a factor of 45, but it is not a prime number.

The prime factors of 15 are 3 and 5.

Prime factors of 18 are 2 and 3 Prime factors of 15 are 3 and 5

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15 is not a prime number, so it can't be a prime factor.

3 is prime 15 is composite

3*5 = 15 in prime numbers

The prime factors of 15 are 3 and 5.

5 is but 15 is not a prime number

The prime factors of 15 are 3 and 5 because 3 and 5 are prime numbers that divide evenly into 15. 1 is a factor of 15, but it is not a prime number.

15 is not prime, so they cannot be.

The prime factorization of 15 is 3 x 5.

The prime factors of 15 are: 3, 5

15 is a factor of 45, but it is not a prime number.

The prime factors of 15 are 3 and 5.

7 is already prime. The prime factorization of 15 is 3 x 5.