Thursday, February 22, 2007
What's Special About This Number?
What's Special About This Number? : Math trivia!
Like: did you know
0 is the additive identity.
1 is the multiplicative identity.
2 is the only even prime.
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9998 is the smallest number n for which the concatenation of n, (n+1), ... (n+21) is prime.
9999 is a Kaprekar number.
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