Everyone has that friend who shrieks every time the clock reads 11:11, lunges for their phone in traffic to snap a license plate with repeating twos, or declares the universe is on their side because ...
Is 170,141,183,460,469,231,731,687,303,715,884,105,727 prime? Before you ask the Internet for an answer, can you consider how you might answer that question without a ...
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