105, 210, 315, 420, 525
squares of prime numbers
There are several ways to achieve this. For example, any two prime numbers. Or just multiply different small prime factors for each of the numbers - picking different prime factors for each - for example, a power of 2, and a power of 3.
57 is a composite number with factors 3 and 19.
All composite numbers have more than two factors whereas prime numbers have only two factors
Prime numbers have only 2 factors, 1 and itself. Composite numbers have 3 or more factors. 1 has only 1 factor, so it is neither a prime number or a composite number.
A prime number is 2 factors and a composite number is 3 or more!
squares of prime numbers
There are several ways to achieve this. For example, any two prime numbers. Or just multiply different small prime factors for each of the numbers - picking different prime factors for each - for example, a power of 2, and a power of 3.
57 is a composite number with factors 3 and 19.
All composite numbers have more than two factors whereas prime numbers have only two factors
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
9 has three factors: 1, 3, 9 9 is composite. 3 is prime. 1 is neither.
141 is a composite numbers. Its factors are 1, 3, 47, and 141.
Prime numbers are numbers that have only 2 factors, 1 and it's self. Composite numbers are the opposite, they have 3 or more factors.
A composite factor is a factor that is a composite number, as opposed to a prime factor which is a factor that is a prime number.
Prime numbers have only 2 factors, 1 and itself. Composite numbers have 3 or more factors. 1 has only 1 factor, so it is neither a prime number or a composite number.
The factors of 18 are: 1, 2, 3, 6, 9, and 18.Since there are other factors in addition to '1' and the number itself,the number is composite.18 is a composite number because it has more than 2 factors18 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.18 is not prime; it is composite. 18 = 2 * 3 * 3