45 = 3 * 3 * 5
45 is not prime. 45 = 3 * 3 * 5The number 45 is known to be a prime number. This learnt in 8th grade math.It is a composite number.45 factors are1,3,5,9,15,45There are more than 2 factors.
It is a composite number.
45 is composite.
45 is a composite number. A number is composite if it can be evenly divided by and least 3 numbers (if it has at least 3 factors). Any composite number has at least one factor other than one and itself. 45 has 6 factors: 1, 3, 5, 9, 15, and 45.
13 and 19 are prime. 33 and 45 are composite.
No, 45 is not a prime number. It is a composite number. A prime number can only be divided by 1 and itself. 45 can also be divided by 3, 5, 9, and 15.
15 is a factor of 45, but it is not a prime number.
45 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.
45, 33 and 27 are composite numbers. 11 is a prime number.
1, 3, 5, 9, 15, 45 Composite
45 is a composite since it factors are 5 and 9.