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| 01 Aug 2013 09:34 AM
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Seriously.
Why do they exist?
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| 01 Aug 2013 09:35 AM
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2 and 3 are the only two prime numbers that don't have a letter in their title.
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| 01 Aug 2013 09:36 AM
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so that you can take the square root of them, and when you see "square roots," you can say to yourself, "hey, remember 2 and 3?"
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| 01 Aug 2013 09:39 AM
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@322
But does that actually matter?
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| 01 Aug 2013 09:48 AM
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Yes it does, because all of the prime numbers with letters also have 2 or 3 inside the word. All of the lettered primes are:
two
three
five
seven
eleven
thirteen
seventeen
nineteen
twenty three (this is the first with a letter that also has a 2 or 3)
twenty five
twenty seven
All those words have 2 or 3 in them. So we know that there have to be other primes that don't have letters in their titles, and we don't need to look for more.
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| 01 Aug 2013 09:50 AM
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@322
So you're saying there's nothing else? :o
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| 01 Aug 2013 09:51 AM
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Yep. We can just go on about our lives knowing that the only two prime numbers without letters in their titles are 2 and 3.
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