Home > Appreciation > Prime Room Numbers

Prime Room Numbers

While at a hotel, waiting for some out-of-town friends to get ready, I went prime number hunting on the 11th floor.

I’m not very good at factoring, so I just captured numbers that looked prime.  I wasn’t thinking too hard about it, so I didn’t notice the one obvious non-prime until later, but the others looked pretty prime to me. 

I expected more than one, but at least I didn’t come up empty. 

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  1. Scott Matthews
    August 11, 2010 at 9:04 pm

    And the digits of that one are the start of the Fibonacci sequence.

    • April 29, 2012 at 10:15 pm

      So 1123 is non-prime? I thought 1119 was the non-prime as it is divisible by 3.

      • Marissa
        April 30, 2012 at 12:11 am

        The only non-prime is 1123. The rest are factorable. (I programmed my TI-84 to factor integers for me… I am lazy)

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