73, prime. 72, composite.
73 is a prime number
73 is prime.
no 73 is a prime number.
They are primes.
73 is Prime, therefore there are no factors to list except for 1.
73 is a prime 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.
Its only factors are itself and one because 73 is a prime number