working...is the nineteenth prime number. (The next up is seventy-one, the next down is sixty-one.)
...an irregular prime. (Don't ask.)
...a lucky prime. (Again, don't ask.)
...the sum of five consecutive primes (7 + 11 + 13 + 17 + 19).
...a discriminant to the Heegner number -67. (I don't even know what this means, but it's cool.)
...since 18! + 1 is divisible by 67 but 67 is not one more than a multiple of 18, 67 is a Pillai prime. (This, I do know, but it would take an hour to explain, and I'd need puppets or something.)
Also, apparently, "In a Voronoi diagram created using points from the prime spiral, no prime less than 10242 will have a rounder Voronoi cell than 67." Cool, huh? There is no Highway 67, making it the highest two-digit number not currently designating any highway in the Interstate Highway System of the United States. Oh, and in the Prisoner game I was in once, my ex-boyfriend was "67."
Pardon me. I'll just be over here with my ravens and my writing desks, going cheerfully mad.
June 26 2009, 10:39:41 UTC 8 years ago
I love interesting number properties like that. Although there was the time I turned 49 and declared that there was "nothing special about that number except that it's prime". Er, OK, I'm a programmer, we don't do basic arithmetic...
June 26 2009, 14:52:32 UTC 8 years ago