Larry,
If 11/13 is a “twin prime,” why are there not 4 in a year as opposed to 3?
1/3, 3/5, and 5/7 would seem to work, but now that I think of it, I remember you saying something recently about the number 1 NOT being considered a prime number for some reason.
Never mind . . . Emily Lattela (a.k.a. Gilda Radner)
You got it Mike (Gilda) ! 🙂 One is indeed not (considered) a prime. I’ve occasionally thought that 2 and 3 should be ‘twin primes’ since they’re actually (the ONLY pair of) consecutive primes, but alas, the tyranny of definition dictates the term be used for ‘consecutive ODD primes’, and so only 3/5 and 5/7 get into the limelight.
Larry,
If 11/13 is a “twin prime,” why are there not 4 in a year as opposed to 3?
1/3, 3/5, and 5/7 would seem to work, but now that I think of it, I remember you saying something recently about the number 1 NOT being considered a prime number for some reason.
Never mind . . . Emily Lattela (a.k.a. Gilda Radner)
You got it Mike (Gilda) ! 🙂 One is indeed not (considered) a prime. I’ve occasionally thought that 2 and 3 should be ‘twin primes’ since they’re actually (the ONLY pair of) consecutive primes, but alas, the tyranny of definition dictates the term be used for ‘consecutive ODD primes’, and so only 3/5 and 5/7 get into the limelight.