No
Composite.
They have other factors
A number which can only be divided by 1 or itself ...
73
There are no multiples of 72 that are prime.
The prime factorization for 72 is in the following 2.2.2.3.3=72
The prime factorization of 72 is 72 9 x 8
The prime factors for 72 are: 2, 3
NO. 400 is not prime.400 is a composite number because it is even so definitely it has other factors aside from 1 and itself which is 2.
55 and 72 are relatively prime because they have no prime factors in common.
6 is not a prime number but it is a factor of 72
The first prime number that is odd is 3, so the second odd prime number is 5. Some think 1 is the first prime nunber, but 1 is neither prime nor composite.