Comment on Amazon should've made Prime Day fall on a date corresponding to an actual three-digit prime number.

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FeatherConstrictor@sh.itjust.works ⁨6⁩ ⁨months⁩ ago

😂 I’m familiar with many of them because I liked math in school and went through all of primary and middle school without a digital calculator. This one is one I hadn’t heard of before and, again because I like math, I’m interested in understanding 1) what the trick is and 2) mathematically how it works out

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