Probably you know that prime number is a natural number that can be only divided by 1 and itself. So these might be 2, 3, 5 and so on and on. But how to find large numbers that are prime numbers. OK Lets leave theory and move head to the project.

Prime number generator is based on ATtiny2313 microcontroller and continuously discovers prime numbers up to 13 millions. So further numbers are discovered slower and slower, because microcontroller has to check every number by doing simple math. Interesting solution of displaying numbers is that they are represented as a grid table of powers of two. By adding these number light by LEDs lets you to find number in decimal format.