Tom the cat is watching a parade of prime number chicks (31, 37, 41, 43, 47, 53) marching by, completely uninterested... until he spots 57 and his predator instincts kick in! Poor 57 - looking all prime-y but actually divisible by 3 and 19. It's the mathematical equivalent of a sheep in wolf's clothing! Mathematicians everywhere are cackling at their desks because YES, we've all been fooled by an impostor number at some point in our calculations. The struggle is REAL. 🔢