A really old project of mine (https://scratch.mit.edu/projects/39031106/, it says it is my first but actually my second because of a time glitch) repurposed to find perfect numbers.
A perfect number is a number that is equal to the sum of its factors (except itself). They grow really quickly. The thumbnail isn't real, but those are the real perfect numbers and the factor sum is correct. To get to the thumbnail would take a really really really long time.
