Mathematical disappointment Memes

Behold the mathematical betrayal of the century! Just when our pattern-seeking brain thinks it's cracked the code with pairs of reversed digits all being prime (13 & 31, 17 & 71), along comes the rebellious duo 19 & 91 to shatter our mathematical dreams! 91 sneakily disguises itself as prime but is actually 7×13 in a trenchcoat. The universe's way of saying "nice try, humans, but math chaos reigns supreme!" This is why mathematicians have trust issues!