Dont spam, The point of posting answers isn't just trying to win nps. Im pretty sure you can get an avatar and a trophie.
For the newest one, the numbers on a sqaure. (Round 266) If you open up a list of prime numbers and you times the first two (being 2 and 3) you get 6. 6 is listed on there.. then move along one on the list and times it again (3 and 5) you get 15 which is also up there.. keep going all the way until you mutiply two prime numberrs equalling 899. Its not there, the closest is 897. (This was found on another site, though i did check it and it seems good) So thus as the instructions tell you 897 x 899 = 806403 Thus theres the answer. Well I think. Im not betting my house on it, but its up to you. Edit: Just fixed something