composite because 3 and 5 will go into it
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.
15 is composite number 17, 19 and 23 are prime numbers.
31 and 61 are prime, the rest composite.
2 is a prime number and 15 is a composite number.
15 is composite.
15 is a composite number. 11 is a prime number.
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
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.
1 is not composite or prime.
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.
No, 13 is a prime number and 15 is a composite number. A composite number is a positive integer that has more than two positive divisors.