A message to the aliens (introduction)

I've got the next five of these written now, ready to go out. So there's hope that I might complete the entire series of 25.

Will any aliens, meeting the human species as a whole after viewing this, feel totally catfished?

-Introduction of decimal numbering system -Primes from 2 though 89 -The biggest mersenne prime known back then

Typography is horrible in this one

That's fabulous.