THE CODE USES A
NUMBER OF ADVANCED TECHNIQUES FOR ACCURACY AND HIGH PERFORMANCE,
INCLUDING:
* TESTING ONLY FACTORS LESS THAN HALF OF THE CANDIDATE
PRIME.
YOU CAN ACTUALLY IMPROVE THIS SIGNIFICANTLY WITH ONLY A VERY LITTLE
ADDITIONAL CODE. BY SPECIAL-CASING NUMBERS LESS THAN TEN, IT TURNS OUT
YOU CAN REDUCE THAT TO "LESS THAN ONE-THIRD OF...".
--MOUSE