One last hint before the code. Try for larger numbers too.
What do you see when subtract n from BigN? In any e column.
Remember, BigN-1 - (n-1) is the same number in column -f
Biggest hint yet.
Last one.
Reverse of that is the answer to finding the solutions.
Smooth numbers?
Shortcut to the general number field sieve?
Calculation instead of search.