Question 382408
Hint: Say that 'a', 'b', and 'c' are the prime numbers. So this means that {{{abc=561}}}. So all you need to do is find all the products of two numbers using the primes 'a', 'b', and 'c'. These products are: ab, bc, and ac. From there, determine which numbers are prime.


Note: we know that 'a', 'b', and 'c' are prime and that abc is prime.