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Q: Is 15 a prime or composite number?

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2 is a prime number and 15 is a composite number.

15 is composite.

15 is a composite number. 11 is a prime number.

No, it's a composite number.15 is NOT a prime number.

No, 15 is not a prime number. It is a composite number. A prime number can only be divided by 1 and itself. The number 15 can also be divided by 3 and 5.

47 is a prime, the other two are composite.

15 is a composite. Its factors are 1, 3, 5, and 15.

15 is a composite number because it has more than two factors. Its factors are 1, 3, 5, and 15.15 is a composite number as it is divisible by 1, 3, 5 and 15.composite. 3*5=1515 is a composite number because it has more than 2 factors

1 is not composite or prime.

A composite number is a number that has smaller factors (excluding 1). A prime number is one that doesn't (1 is not considered prime nor composite, because of its special role in multiplication).Since 15 is divisible by 3, it is composite.

15 is not prime. 15 = 3 * 5, so 15 is composite.

15 is a composite number - it is the product of 3 and 5. (3*5=15)

15 is composite number

15 is composite number 17, 19 and 23 are prime numbers.

31 and 61 are prime, the rest composite.

There are 15 prime numbers and 34 composite numbers because 1 is not considered to be a prime or composite number

No because 11 is a prime number but the rest of them are composite numbers.

It is composite because it has more than 2 factors

3 x 5 = 15

It is a composite number.

It is not a prime number, it is a composite number.

It is not a prime number, it is a composite number.

It is a composite number, not a prime number.

15 is a composite number because it has at least one positive factor other than one or itself.

It is composite because it is divisible by 3(4 + 8 + 3 = 15)