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Owl Zero
ANSWERS: 3
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No, it's not. It's divisible by 3. (and 19)
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No, it's not a prime number. Don't you know what 3 times 19 is?
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beaker95 Is it 42....? -
Frankie the Fly No, that's 3 times 14.
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57 has an aliquot sum of 23 and is the first composite member of the 23-aliquot tree. Although 57 is not prime, it is jokingly known as the "Grothendieck prime" after a story in which mathematician Alexander Grothendieck supposedly gave it as an example of a particular prime number.
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Roaring
I bet you would have a good explanation of the Golden Mean as well! I noticed your interest in following me. Any reason? Do you have any interesting questions to post?
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