Odd Number Theorists
Two 'conjectures' joke that perfect-number researchers are odd, illustrated by a mathematician who made a prime whose binary digits look like a giraffe.
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Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-10-06-odd-number-theorists/ (CC BY-NC 4.0)Transcript
"Conjecture: No perfect number is odd."
"Conjecture: All perfect number theorists are."
A (holding a phone): "I made a prime number whose binary representation on a phone screen looks like a giraffe!"
B: "And people say math has no useful applications."