Re: Jenny Jenny prime puzzle
- North Carolina or Virginia.
--- In firstname.lastname@example.org, Alan Eliasen <eliasen@...> wrote:
> I posted this (shortened) to Twitter tonight: (I'm
> https://twitter.com/aeliasen )
> I got this phone number from a girl named Jenny tonight. Her 7-digit
> number is 867-5309. She hinted that it's prime and her number plus 2
> are twin primes. Yet I don't know her (3-digit) area code in the U.S.!
> Where could she live?! How many places might you expect mathematically
> and how many places might she really live?
> Note that in the U.S., area codes may not start with 0 or 1. These
> are 3-digit numbers that precede the 7-digit local phone number, giving
> a 10-digit number.
> She also hinted that her 10-digit number with area code and that
> number plus 2 are are also twin primes! Could you tell me now where she
> might live?
> Alan Eliasen