Answer :
Answer:
3 and 17
Step-by-step explanation:
The list of all positive divisors (i.e., the list of all integers that divide 51) is as follows: 1, 3, 17, 51.
To be 51 a prime number, it would have been required that 51 has only two divisors, i.e., itself and 1.
As a consequence:
51 is a multiple of 1
51 is a multiple of 3
51 is a multiple of 17
To be 51 a prime number, it would have been required that 51 has only two divisors, i.e., itself and 1.
However, 51 is a semiprime (also called biprime or 2-almost-prime), because it is the product of a two non-necessarily distinct prime numbers. Indeed, 51 = 3 x 17, where 3 and 17 are both prime numbers.