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TIL about Belphegor's prime, 1000000000000066600000000000001, a palindromic prime number with 666 at its heart and 13 zeros on either side. It was named after one of the Princes of Hell, who was charged with helping people make ingenious inventions and discoveries.

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loMX7 TIL Human Alarm Clocks: Before the advent of reliable and affordable alarm clocks, British and Irish workers were woken up by a person who made sure they could get to work on time. The knocker-up used a baton to knock on clients’ doors or a long and light stick to reach windows on higher floors.
oBWNW TIL LEGO launched 'braille bricks' for children to learn braille. The product is currently being tested in various languages too: Danish, Norwegian, English, Portuguese, German, Spanish, and French.
Y7anB TIL the East Louisiana Railroad company supported Homère Plessy challenging Jim Crow on their train because they didn't want to have to buy extra railroad cars to keep people seperate
QJDad TIL when Weird Al Yankovic asked Kurt Cobain to parody 'Smells Like Teen Spirit' that Kurt asked him if it would be about food, and Al said it would be about how no one could understand his lyrics. Kurt found that extremely funny, and said absolutely.
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