Almost all the biggest primes known are Mersenne primes, and every Mersenne prime is an even perfect number. But are there are an infinite number of Mersenne primes, and are there any odd perfect numbers? My other YouTube channels: The Science Fiction Rock Experience ( the music show I produce): null My science and music channel:: null Science World (with Emrah Polat): null My website: https://www.daviddarling.info/ My latest book is available here: https://oneworld-publications.com/work/the-biggest-number-in-the-world/