1 is not composite or prime.
15 is composite.
There are 15 prime numbers and 34 composite numbers because 1 is not considered to be a prime or composite number
1, 3, 5, 9, 15, 45 Composite
2 is a prime number and 15 is a composite number.
15 is a composite. Its factors are 1, 3, 5, and 15.
1 is not composite or prime.
composite because 3 and 5 will go into 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
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.
To find a composite number, think of two numbers that can be multiplied to equal that number. For example, 15 is a composite number because its factors are 1, 3, 5 and 15. For a number to be composite, it should have more than two factors.To know 15 is a composite number, know:1 x 15=153 x 5 =15All composite numbers have more than two factors whereas prime numbers have only two factors.
15 is a composite number. 11 is a prime number.
15 is composite.
As well as 1 and itself, the number 15 is divisible by 5 and 3. Therefore, it is composite - not prime.
15 is the only composite factor of 15.
Composite numbers are numbers which are divisible by another number other than 1 and the number itself. Ex 1: 15 is divisible by 1, 3, 5 and 15. So, 15 is a composite number. Ex 2: 3 is divisible by 1 and 3 only. So, such numbers which are only divisible by 1 and the number itself are known as Prime numbers.
There are 15 prime numbers and 34 composite numbers because 1 is not considered to be a prime or composite number