no
No.
No.
The prime numbers between 15 and 20 are 17 and 19. 17*19 = 323
17 and 3 are two prime numbers whose sum is 20. Their product is 51.
20 = 2 x 2 x 5
No, the product of two prime numbers is unique.
3*17 = 51
20 10 5
38
The product is exactly 376 since that is what the prime numbers for 376 are!The product is exactly 376 since that is what the prime numbers for 376 are!The product is exactly 376 since that is what the prime numbers for 376 are!The product is exactly 376 since that is what the prime numbers for 376 are!
The product of two prime numbers will be composite.