Is the product of two prime numbers also prime?

Answer 1

no

Answer 2

No, the product of two prime numbers is not prime. It cannot be. By definition a prime is only divisible by itself and 1. Any other product is therefore composite, ie non-prime. == == No. Anytime 2 prime numbers are multiplied, they form a composite number. According to number theory 0 and 1 are neither composite nor are they prime. So 1 * 3 = 3 is prime, but it isn't the product of prime numbers. 3 * 3 = 9 which is composite. However any product of 2 primes will only have 2 prime factors.. so 5 * 7=35 can only be broken down to 5 * 7 or 7 * 5.

Remember 1 isn't prime, but is commonly mistaken as being prime.