bonanova 85 Posted September 1, 2012 Report Share Posted September 1, 2012 What is the "oddest" prime number? Quote Link to post Share on other sites
0 phil1882 13 Posted September 1, 2012 Report Share Posted September 1, 2012 by that I'm guessing you mean most unusual, but every number has some interesting/unusual property about it. Quote Link to post Share on other sites
0 mmiguel 1 Posted September 1, 2012 Report Share Posted September 1, 2012 2 Since everything else is not even. Quote Link to post Share on other sites
0 bonanova 85 Posted September 1, 2012 Author Report Share Posted September 1, 2012 2 Since everything else is not even. That's the number I had in mind. ... a nice genre of puzzles that asks which of the following choices is unique? All of them but one has a distinctive feature. The one that doesn't is thus unique. The only prime number that is not odd is by that criterion the "oddest". Quote Link to post Share on other sites
0 James33 1 Posted September 2, 2012 Report Share Posted September 2, 2012 By the logic above 97 is the oddest prime number because it is the only prime that has the property that it is not equal to 97. Quote Link to post Share on other sites
0 mmiguel 1 Posted September 2, 2012 Report Share Posted September 2, 2012 By the logic above 97 is the oddest prime number because it is the only prime that has the property that it is not not equal to 97. Quote Link to post Share on other sites
0 Pickett 13 Posted September 4, 2012 Report Share Posted September 4, 2012 I've always found 41 to be the most unusual prime, just because of the property that if you start with 41 add 2, then add 4, then add 6, and so on, you will get a prime number for the next 40 numbers: 41, 43, 47, 53, 61, 71, 83, 97...etc...etc...which happens to end at 1681 (41 * 41) I've always thought that was strange... ALSO, if you allow NEGATIVE numbers to be prime (in other words -1 and x are the only divisors of x), then -41 is ALSO strange, in that it's the same temperature in Fahrenheit and Celsius (with rounding...yes, I realize -40 is exactly the same...but -41 is pretty darn close...) So, 41 seems to be the strange number... Quote Link to post Share on other sites
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bonanova 85
What is the "oddest" prime number?
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