since we have that 2*10^6=2000000 and 5^12=244140625 and 2^12=4096 so the equation becomes 244140625-2000000+4096=(244140625-2000000)+4096=242140625+4096=242144721 where we know 19 is one of the factors since we have 3 x 3 x 3 x 3 x 7 x 7 x 13 x 13 x 19 x 19 = 242,144,721. It can also be written in exponential form as 3^4*7^2*13^2*19^2.