ELI5: Explain Like I'm 5
Examples: garbage in, garbage out, imposter syndrome, relational databases, redneck culture, html

Prime number

A prime number is a number that can only be divided evenly by one and itself. For example, the number 7 can only be divided evenly by 1 and 7. It can not be divided by any other number. Prime numbers are special because they can only be divided by themselves and 1!