composite because 3 and 5 will go into it
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composite i hope you kids arnt trying to cheat !
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.
15 is a composite number. 11 is a prime number.
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
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.
31 and 61 are prime, the rest composite.
No, it's a composite number.15 is NOT a prime number.