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It's 11/11/11 -- and a palindrome, too!

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    It's 11/11/11 -- and a palindrome, too!

    I love today's date, and I know lots of others do, too. But I wonder how many realize that today's date squared produces a palindrome: 111111 X 111111 = 12345654321

    Definitely adds to the coolness factor.
    Xenix/UNIX user since 1985 | Linux user since 1991 | Was registered Linux user #163544


    #2
    Re: It's 11/11/11 -- and a palindrome, too!

    Woo hoo, a pattern!

    1 x 1 = 1
    11 x 11 = 121
    111 x 111 = 12321
    1111 x 1111 = 1234321
    11111 x 11111 = 123454321
    111111 x 111111 = 12345654321
    ...

    There's probably a formula to describe this...

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      #3
      Re: It's 11/11/11 -- and a palindrome, too!

      Oh, I like that! And I'm sure you're right, there probably is a formula to describe it, but I have no idea what it might be.
      Xenix/UNIX user since 1985 | Linux user since 1991 | Was registered Linux user #163544

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        #4
        Re: It's 11/11/11 -- and a palindrome, too!

        Numeric Palindromes
        Windows no longer obstructs my view.
        Using Kubuntu Linux since March 23, 2007.
        "It is a capital mistake to theorize before one has data." - Sherlock Holmes

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          #5
          Re: It's 11/11/11 -- and a palindrome, too!

          Very cool link, Snowhog. Thanks for posting it.
          Xenix/UNIX user since 1985 | Linux user since 1991 | Was registered Linux user #163544

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            #6
            Re: It's 11/11/11 -- and a palindrome, too!

            One of the reasons that a lot of card tricks work.

            woodsmoke

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