Prime

Prime is a game for people who enjoy using their brain to solve mathematical puzzles.

In each level of the game you must try getting to the highest possible number, by multiplying smaller numbers. But you can only get there step by step, by making the next number above the currently highest number.
E.g. in level 1 you start with 3 as highest number, and you must get up to 26.
But you have to first make the 4, which is 2 times 2. The 5 is a prime number, which you get for free.
Then you have to make the 6 and so on until you reach 26.

If you need a factor for a multiplication, you can search existing numbers containing the factor you need, split them and then use them for multiplication.
If no existing number contains the factor you need, you can ask Prime to give it to you.
But don't do that too often, otherwise you might not be able to finish the level!
And be fast. The faster you are, the higher is the score you can achieve!