15
In each of those cases, the only composite factor of the number is the number itself.
15 is the only composite factor of 15.Just 15
15 is a composite number because it has at least one positive factor other than one or itself.
1*105 3*35 5*21 7*15 Yes it is a composite number! A prime number has 2 factors, 1 and itself, and a composite number has 3 or more factors. The number 1 has only one factor and there fore is not prime and not composite.
composite because 3 and 5 will go into it
The only composite factor of 35 is 35 itself.
2865 is a composite number. This is because composite numbers are any number that has another factor besides one and itself. Therefore, since 5, 15, and 191 to name a few are factors of 2865 that makes it a composite number.
15
15 is a composite number. 11 is a prime number.
15 is composite.
Oh, dude, a composite number is basically a number that has more factors than just 1 and itself. So, for 15, you've got 1, 3, 5, and 15 as factors, making it a composite number. It's like the popular kid at the math party with all those factors hanging out with it.
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