Answers to the questions in "Nerdy fun with dates and primes":
- What was the last date to be a prime number in both notations?
2010-08-09, which translates to 20100809 and 2010221
(the only such date in 2010)
- What will be the next date that is a prime number in both notations?
2012-03-23, which translates to 20120323 and 2012083
(the only such date in 2012)
- What is the most recent past year with more than one date which is prime in both notations?
2008 had 3 such dates: 2008-01-03, 2008-10-03, and 2008-10-23.
- What is the nearest future year with more than one date which is prime in both notations?
2013 will have 3 such dates: 2013-08-29, 2013-11-03, and 2013-11-09