John Conway proves that 91 is the smallest number which looks prime but isn't (www.youtube.com)

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[-] [email protected] 20 points 9 hours ago

Some superstitious nerdy teenagers convinced small child me that 91 was a universal anomaly bc it’s 13 (bad luck) * 7 (good luck), so my weird brain never saw 91 as prime , & I can’t be the only person this happened to

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this post was submitted on 22 Sep 2024

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