The smallest semiprime is 4 because it is the product of exactly 2 primes (2 and 2) and the next is 6.

Find the smallest pair of consecutive numbers that are semiprimes.

Find the smallest three consecutive numbers that are semiprimes.

Find the smallest four consecutive numbers that are semiprimes.

Continue up to ten.

(In reply to Hemidemisemi... by ed bottemiller)

ed,
    when initially reviewing this problem I completely accepted it.  I did relook and found the issue that I was getting 2x2x? .. !

That was challenged but I accepted that this was posted with somewhat of a trick in mind, a 'red herring' so to speak.

Posted by brianjn on 2009-09-06 09:11:22